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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2714632.pdf | 3.66 MB | Shaun Ewing | Aug 02, 1955 00:00 |
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US-2714632-A // Ringing generator and interrupter using electron tubes // Hall Nathan I. ; Korn Franklin A. ; Powell Harold E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.66 MB | Shaun Ewing | Aug 02, 1955 00:00 | US-2714632-A // Ringing generator and interrupter using electron tubes // Hall Nathan I. ; Korn Franklin A. ; Powell Harold E. // Bell Telephone Labor Inc | ||||
| PDF File 2675427.pdf | 3.66 MB | Shaun Ewing | Apr 13, 1954 00:00 |
|
US-2675427-A // Electrostatic scanning mechanism for scanning both tips and rings of calling lines and combining the results of these scanning operations // Newby Neal D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.66 MB | Shaun Ewing | Apr 13, 1954 00:00 | US-2675427-A // Electrostatic scanning mechanism for scanning both tips and rings of calling lines and combining the results of these scanning operations // Newby Neal D. // Bell Telephone Labor Inc | ||||
| PDF File 2626990.pdf | 3.57 MB | Shaun Ewing | Jan 27, 1953 00:00 |
|
US-2626990-A // Guided wave frequency range transducer // Pierce John R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.57 MB | Shaun Ewing | Jan 27, 1953 00:00 | US-2626990-A // Guided wave frequency range transducer // Pierce John R. // Bell Telephone Labor Inc | ||||
| PDF File 2633534.pdf | 3.44 MB | Shaun Ewing | Mar 31, 1953 00:00 |
|
US-2633534-A // Variable frequency oscillator // Anderson Frithiof B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.44 MB | Shaun Ewing | Mar 31, 1953 00:00 | US-2633534-A // Variable frequency oscillator // Anderson Frithiof B. // Bell Telephone Labor Inc | ||||
| PDF File 2629017.pdf | 3.40 MB | Shaun Ewing | Feb 17, 1953 00:00 |
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US-2629017-A // Speech transmission system // Dahlbom Carl A. ; Weaver Allan // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.40 MB | Shaun Ewing | Feb 17, 1953 00:00 | US-2629017-A // Speech transmission system // Dahlbom Carl A. ; Weaver Allan // Bell Telephone Labor Inc | ||||
| PDF File 2692728.pdf | 3.39 MB | Shaun Ewing | Oct 26, 1954 00:00 |
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US-2692728-A // Testing system // Strickler Walter B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.39 MB | Shaun Ewing | Oct 26, 1954 00:00 | US-2692728-A // Testing system // Strickler Walter B. // Bell Telephone Labor Inc | ||||
| PDF File 2680777.pdf | 3.38 MB | Shaun Ewing | Jun 08, 1954 00:00 |
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US-2680777-A // Electronic switching circuit // Rea Wilton T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.38 MB | Shaun Ewing | Jun 08, 1954 00:00 | US-2680777-A // Electronic switching circuit // Rea Wilton T. // Bell Telephone Labor Inc | ||||
| PDF File 2583088.pdf | 3.35 MB | Shaun Ewing | Jan 22, 1952 00:00 |
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US-2583088-A // Alarm signaling system // Clutts Charles E. ; Pullis George A. ; Schenck Alfred K. ; Weber Laurence A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.35 MB | Shaun Ewing | Jan 22, 1952 00:00 | US-2583088-A // Alarm signaling system // Clutts Charles E. ; Pullis George A. ; Schenck Alfred K. ; Weber Laurence A. // Bell Telephone Labor Inc | ||||
| PDF File 2596584.pdf | 3.33 MB | Shaun Ewing | May 13, 1952 00:00 |
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US-2596584-A // Pulse conversion system // Michael Henry J. ; Whittney Wiley // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.33 MB | Shaun Ewing | May 13, 1952 00:00 | US-2596584-A // Pulse conversion system // Michael Henry J. ; Whittney Wiley // Bell Telephone Labor Inc | ||||
| PDF File 2620399.pdf | 3.33 MB | Shaun Ewing | Dec 02, 1952 00:00 |
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US-2620399-A // Telephone switching system employing repetitive impulsing // Malthaner William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.33 MB | Shaun Ewing | Dec 02, 1952 00:00 | US-2620399-A // Telephone switching system employing repetitive impulsing // Malthaner William A. // Bell Telephone Labor Inc | ||||
| PDF File 2652116.pdf | 3.31 MB | Shaun Ewing | Sept 15, 1953 00:00 |
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US-2652116-A // Perforating system // Mallina Rudolph F. ; Melick John M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.31 MB | Shaun Ewing | Sept 15, 1953 00:00 | US-2652116-A // Perforating system // Mallina Rudolph F. ; Melick John M. // Bell Telephone Labor Inc | ||||
| PDF File 2572740.pdf | 3.30 MB | Shaun Ewing | Oct 23, 1951 00:00 |
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US-2572740-A // Private branch exchange telephone system // Malthaner William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.30 MB | Shaun Ewing | Oct 23, 1951 00:00 | US-2572740-A // Private branch exchange telephone system // Malthaner William A. // Bell Telephone Labor Inc | ||||
| PDF File 2542208.pdf | 3.28 MB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542208-A // Telegraph concentration board circuits // Purvis Matthew R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.28 MB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542208-A // Telegraph concentration board circuits // Purvis Matthew R. // Bell Telephone Labor Inc | ||||
| PDF File 2700148.pdf | 3.26 MB | Shaun Ewing | Jan 18, 1955 00:00 |
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US-2700148-A // Magnetic drum dial pulse recording and storage register // Mcguigan John H. ; Murphy Orlando J. ; Newby Neal D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.26 MB | Shaun Ewing | Jan 18, 1955 00:00 | US-2700148-A // Magnetic drum dial pulse recording and storage register // Mcguigan John H. ; Murphy Orlando J. ; Newby Neal D. // Bell Telephone Labor Inc | ||||
| PDF File 2577609.pdf | 3.26 MB | Shaun Ewing | Dec 04, 1951 00:00 |
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US-2577609-A // Call data recording automatic telephone system // Dimond Thomas L. ; Wingardner Charles A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.26 MB | Shaun Ewing | Dec 04, 1951 00:00 | US-2577609-A // Call data recording automatic telephone system // Dimond Thomas L. ; Wingardner Charles A. // Bell Telephone Labor Inc | ||||
| PDF File 2685063.pdf | 3.25 MB | Shaun Ewing | Jul 27, 1954 00:00 |
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US-2685063-A // Method of and system for measuring phase shift // Alsberg Dietrich A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.25 MB | Shaun Ewing | Jul 27, 1954 00:00 | US-2685063-A // Method of and system for measuring phase shift // Alsberg Dietrich A. // Bell Telephone Labor Inc | ||||
| PDF File 2679977.pdf | 3.21 MB | Shaun Ewing | Jun 01, 1954 00:00 |
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US-2679977-A // Calculator sign control circuit // Andrews Ernest G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.21 MB | Shaun Ewing | Jun 01, 1954 00:00 | US-2679977-A // Calculator sign control circuit // Andrews Ernest G. // Bell Telephone Labor Inc | ||||
| PDF File 2595106.pdf | 3.16 MB | Shaun Ewing | Apr 29, 1952 00:00 |
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US-2595106-A // Recording telephone system // Scudder Frederick J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.16 MB | Shaun Ewing | Apr 29, 1952 00:00 | US-2595106-A // Recording telephone system // Scudder Frederick J. // Bell Telephone Labor Inc | ||||
| PDF File 2668195.pdf | 3.13 MB | Shaun Ewing | Feb 02, 1954 00:00 |
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US-2668195-A // Marking and switching system // Brewer Sherman T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.13 MB | Shaun Ewing | Feb 02, 1954 00:00 | US-2668195-A // Marking and switching system // Brewer Sherman T. // Bell Telephone Labor Inc | ||||
| PDF File 2633492.pdf | 3.06 MB | Shaun Ewing | Mar 31, 1953 00:00 |
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US-2633492-A // Guided wave frequency range, frequency selective and equalizing structure // Ring Douglas H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.06 MB | Shaun Ewing | Mar 31, 1953 00:00 | US-2633492-A // Guided wave frequency range, frequency selective and equalizing structure // Ring Douglas H. // Bell Telephone Labor Inc |
