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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2037193.pdf | 626 kB | Shaun Ewing | Apr 14, 1936 00:00 |
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US-2037193-A // Teletypewriter switchboard // Burgess Alfred A. ; Knowlton Alfred D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 626 kB | Shaun Ewing | Apr 14, 1936 00:00 | US-2037193-A // Teletypewriter switchboard // Burgess Alfred A. ; Knowlton Alfred D. // Bell Telephone Labor Inc | ||||
| PDF File 1916231.pdf | 626 kB | Shaun Ewing | Jul 04, 1933 00:00 |
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US-1916231-A // Measurement of electrical characteristics of transmission circuits and networks // Och Henry G. ; Hinshaw Foster A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 626 kB | Shaun Ewing | Jul 04, 1933 00:00 | US-1916231-A // Measurement of electrical characteristics of transmission circuits and networks // Och Henry G. ; Hinshaw Foster A. // Bell Telephone Labor Inc | ||||
| PDF File 1799811.pdf | 626 kB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799811-A // Signaling system // Gooderham John W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 626 kB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799811-A // Signaling system // Gooderham John W. // Bell Telephone Labor Inc | ||||
| PDF File 1921433.pdf | 625 kB | Shaun Ewing | Aug 08, 1933 00:00 |
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US-1921433-A // Constant temperature apparatus // Hovgaard Ole M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 625 kB | Shaun Ewing | Aug 08, 1933 00:00 | US-1921433-A // Constant temperature apparatus // Hovgaard Ole M. // Bell Telephone Labor Inc | ||||
| PDF File 2162806.pdf | 623 kB | Shaun Ewing | Jun 20, 1939 00:00 |
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US-2162806-A // Frequency changer // Fay Clifford E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 623 kB | Shaun Ewing | Jun 20, 1939 00:00 | US-2162806-A // Frequency changer // Fay Clifford E. // Bell Telephone Labor Inc | ||||
| PDF File 1871383.pdf | 622 kB | Shaun Ewing | Aug 09, 1932 00:00 |
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US-1871383-A // Sound reproducing system // Miller Robert A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 622 kB | Shaun Ewing | Aug 09, 1932 00:00 | US-1871383-A // Sound reproducing system // Miller Robert A. // Bell Telephone Labor Inc | ||||
| PDF File 2032865.pdf | 622 kB | Shaun Ewing | Mar 03, 1936 00:00 |
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US-2032865-A // Piezoelectric crystal apparatus // Bicling Carl A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 622 kB | Shaun Ewing | Mar 03, 1936 00:00 | US-2032865-A // Piezoelectric crystal apparatus // Bicling Carl A. // Bell Telephone Labor Inc | ||||
| PDF File 2166764.pdf | 622 kB | Shaun Ewing | Jul 18, 1939 00:00 |
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US-2166764-A // Switching mechanism // Matthies William H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 622 kB | Shaun Ewing | Jul 18, 1939 00:00 | US-2166764-A // Switching mechanism // Matthies William H. // Bell Telephone Labor Inc | ||||
| PDF File 2010543.pdf | 622 kB | Shaun Ewing | Aug 06, 1935 00:00 |
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US-2010543-A // Electrooptical system // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 622 kB | Shaun Ewing | Aug 06, 1935 00:00 | US-2010543-A // Electrooptical system // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2152704.pdf | 622 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152704-A // Electric switch // Massonneau Robert F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 622 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152704-A // Electric switch // Massonneau Robert F. // Bell Telephone Labor Inc | ||||
| PDF File 2100367.pdf | 621 kB | Shaun Ewing | Nov 30, 1937 00:00 |
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US-2100367-A // Electric discharge device // Ward Frank E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 621 kB | Shaun Ewing | Nov 30, 1937 00:00 | US-2100367-A // Electric discharge device // Ward Frank E. // Bell Telephone Labor Inc | ||||
| PDF File 1934412.pdf | 621 kB | Shaun Ewing | Nov 07, 1933 00:00 |
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US-1934412-A // Radio receiving circuit // Englund Carl R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 621 kB | Shaun Ewing | Nov 07, 1933 00:00 | US-1934412-A // Radio receiving circuit // Englund Carl R. // Bell Telephone Labor Inc | ||||
| PDF File 1853955.pdf | 621 kB | Shaun Ewing | Apr 12, 1932 00:00 |
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US-1853955-A // Acoustic device // Blattner David G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 621 kB | Shaun Ewing | Apr 12, 1932 00:00 | US-1853955-A // Acoustic device // Blattner David G. // Bell Telephone Labor Inc | ||||
| PDF File 1832901.pdf | 621 kB | Shaun Ewing | Nov 24, 1931 00:00 |
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US-1832901-A // Measurement of mechanical impedance // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 621 kB | Shaun Ewing | Nov 24, 1931 00:00 | US-1832901-A // Measurement of mechanical impedance // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 1965414.pdf | 620 kB | Shaun Ewing | Jul 03, 1934 00:00 |
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US-1965414-A // Sound picture recording system // Hardy Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 620 kB | Shaun Ewing | Jul 03, 1934 00:00 | US-1965414-A // Sound picture recording system // Hardy Frank // Bell Telephone Labor Inc | ||||
| PDF File 1848143.pdf | 619 kB | Shaun Ewing | Mar 08, 1932 00:00 |
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US-1848143-A // Motion picture apparatus // Pfannenstiehl Harry // Bell Telephone Labor Inc | |||
| Version 1 (current) | 619 kB | Shaun Ewing | Mar 08, 1932 00:00 | US-1848143-A // Motion picture apparatus // Pfannenstiehl Harry // Bell Telephone Labor Inc | ||||
| PDF File 1838027.pdf | 619 kB | Shaun Ewing | Dec 22, 1931 00:00 |
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US-1838027-A // Electrodynamic device // Clarke Harry R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 619 kB | Shaun Ewing | Dec 22, 1931 00:00 | US-1838027-A // Electrodynamic device // Clarke Harry R. // Bell Telephone Labor Inc | ||||
| PDF File 1862578.pdf | 619 kB | Shaun Ewing | Jun 14, 1932 00:00 |
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US-1862578-A // Signaling system // Murphy Paul B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 619 kB | Shaun Ewing | Jun 14, 1932 00:00 | US-1862578-A // Signaling system // Murphy Paul B. // Bell Telephone Labor Inc | ||||
| PDF File 2120989.pdf | 619 kB | Shaun Ewing | Jun 21, 1938 00:00 |
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US-2120989-A // Mechanical drive // Pfannenstiehl Harry // Bell Telephone Labor Inc | |||
| Version 1 (current) | 619 kB | Shaun Ewing | Jun 21, 1938 00:00 | US-2120989-A // Mechanical drive // Pfannenstiehl Harry // Bell Telephone Labor Inc | ||||
| PDF File 2034708.pdf | 618 kB | Shaun Ewing | Mar 24, 1936 00:00 |
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US-2034708-A // Remote control apparatus // Browne Bennie O. ; Morrison Howard // Bell Telephone Labor Inc | |||
| Version 1 (current) | 618 kB | Shaun Ewing | Mar 24, 1936 00:00 | US-2034708-A // Remote control apparatus // Browne Bennie O. ; Morrison Howard // Bell Telephone Labor Inc |
