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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1732286.pdf | 257 kB | Shaun Ewing | Oct 22, 1929 00:00 |
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US-1732286-A // Telegraph system // Shanck Roy B. // American Telephone & Telegraph | |||
| Version 1 (current) | 257 kB | Shaun Ewing | Oct 22, 1929 00:00 | US-1732286-A // Telegraph system // Shanck Roy B. // American Telephone & Telegraph | ||||
| PDF File 1696416.pdf | 256 kB | Shaun Ewing | Dec 25, 1928 00:00 |
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US-1696416-A // Voltage regulator // Roberts Leland C. // American Telephone & Telegraph | |||
| Version 1 (current) | 256 kB | Shaun Ewing | Dec 25, 1928 00:00 | US-1696416-A // Voltage regulator // Roberts Leland C. // American Telephone & Telegraph | ||||
| PDF File 1533105.pdf | 256 kB | Shaun Ewing | Apr 14, 1925 00:00 |
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US-1533105-A // Electric signaling // Eggers Henry C. T. // American Telephone & Telegraph | |||
| Version 1 (current) | 256 kB | Shaun Ewing | Apr 14, 1925 00:00 | US-1533105-A // Electric signaling // Eggers Henry C. T. // American Telephone & Telegraph | ||||
| PDF File 1700799.pdf | 255 kB | Shaun Ewing | Feb 05, 1929 00:00 |
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US-1700799-A // Locking mechanism // Inglis Alfred H. ; Bostwick Lee G. // American Telephone & Telegraph | |||
| Version 1 (current) | 255 kB | Shaun Ewing | Feb 05, 1929 00:00 | US-1700799-A // Locking mechanism // Inglis Alfred H. ; Bostwick Lee G. // American Telephone & Telegraph | ||||
| PDF File 1636031.pdf | 254 kB | Shaun Ewing | Jul 19, 1927 00:00 |
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US-1636031-A // Voice-operated relay equipment // Wright Sumner B. // American Telephone & Telegraph | |||
| Version 1 (current) | 254 kB | Shaun Ewing | Jul 19, 1927 00:00 | US-1636031-A // Voice-operated relay equipment // Wright Sumner B. // American Telephone & Telegraph | ||||
| PDF File 1660389.pdf | 254 kB | Shaun Ewing | Feb 28, 1928 00:00 |
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US-1660389-A // System of synchronizing signaling apparatus // Matte Andrew L. // American Telephone & Telegraph | |||
| Version 1 (current) | 254 kB | Shaun Ewing | Feb 28, 1928 00:00 | US-1660389-A // System of synchronizing signaling apparatus // Matte Andrew L. // American Telephone & Telegraph | ||||
| PDF File 1700166.pdf | 254 kB | Shaun Ewing | Jan 29, 1929 00:00 |
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US-1700166-A // Insulator for bridle wires // Johnson Benjamin // American Telephone & Telegraph | |||
| Version 1 (current) | 254 kB | Shaun Ewing | Jan 29, 1929 00:00 | US-1700166-A // Insulator for bridle wires // Johnson Benjamin // American Telephone & Telegraph | ||||
| PDF File 1728226.pdf | 254 kB | Shaun Ewing | Sept 17, 1929 00:00 |
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US-1728226-A // Telegraph repeater // Branson David E. // American Telephone & Telegraph | |||
| Version 1 (current) | 254 kB | Shaun Ewing | Sept 17, 1929 00:00 | US-1728226-A // Telegraph repeater // Branson David E. // American Telephone & Telegraph | ||||
| PDF File 1612848.pdf | 253 kB | Shaun Ewing | Jan 04, 1927 00:00 |
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US-1612848-A // Multiplex telegraphy // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 253 kB | Shaun Ewing | Jan 04, 1927 00:00 | US-1612848-A // Multiplex telegraphy // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1776822.pdf | 253 kB | Shaun Ewing | Sept 30, 1930 00:00 |
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US-1776822-A // Automatic volume-control system // Strieby Maurice E. // American Telephone & Telegraph | |||
| Version 1 (current) | 253 kB | Shaun Ewing | Sept 30, 1930 00:00 | US-1776822-A // Automatic volume-control system // Strieby Maurice E. // American Telephone & Telegraph | ||||
| PDF File 1440407.pdf | 253 kB | Shaun Ewing | Jan 02, 1923 00:00 |
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US-1440407-A // Detecting ciscuits // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 253 kB | Shaun Ewing | Jan 02, 1923 00:00 | US-1440407-A // Detecting ciscuits // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 1759023.pdf | 252 kB | Shaun Ewing | May 20, 1930 00:00 |
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US-1759023-A // Electrical protective device // Schirmer August H. // American Telephone & Telegraph | |||
| Version 1 (current) | 252 kB | Shaun Ewing | May 20, 1930 00:00 | US-1759023-A // Electrical protective device // Schirmer August H. // American Telephone & Telegraph | ||||
| PDF File 1749844.pdf | 252 kB | Shaun Ewing | Mar 11, 1930 00:00 |
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US-1749844-A // System for furnishing intermittent telegraph service // Roberts Leland C. // American Telephone & Telegraph | |||
| Version 1 (current) | 252 kB | Shaun Ewing | Mar 11, 1930 00:00 | US-1749844-A // System for furnishing intermittent telegraph service // Roberts Leland C. // American Telephone & Telegraph | ||||
| PDF File 1773776.pdf | 252 kB | Shaun Ewing | Aug 26, 1930 00:00 |
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US-1773776-A // Telephone conference arrangement // Crisson George // American Telephone & Telegraph | |||
| Version 1 (current) | 252 kB | Shaun Ewing | Aug 26, 1930 00:00 | US-1773776-A // Telephone conference arrangement // Crisson George // American Telephone & Telegraph | ||||
| PDF File 1526348.pdf | 252 kB | Shaun Ewing | Feb 17, 1925 00:00 |
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US-1526348-A // Two-party signaling system // Jr. James M. Labaugh, // American Telephone & Telegraph | |||
| Version 1 (current) | 252 kB | Shaun Ewing | Feb 17, 1925 00:00 | US-1526348-A // Two-party signaling system // Jr. James M. Labaugh, // American Telephone & Telegraph | ||||
| PDF File 1559656.pdf | 251 kB | Shaun Ewing | Nov 03, 1925 00:00 |
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US-1559656-A // Method of and means for increasing voltages // Thorp I. Jay // American Telephone & Telegraph | |||
| Version 1 (current) | 251 kB | Shaun Ewing | Nov 03, 1925 00:00 | US-1559656-A // Method of and means for increasing voltages // Thorp I. Jay // American Telephone & Telegraph | ||||
| PDF File 1430531.pdf | 251 kB | Shaun Ewing | Oct 03, 1922 00:00 |
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US-1430531-A // Apparatus for molding // Berryman David // American Telephone & Telegraph | |||
| Version 1 (current) | 251 kB | Shaun Ewing | Oct 03, 1922 00:00 | US-1430531-A // Apparatus for molding // Berryman David // American Telephone & Telegraph | ||||
| PDF File 1590252.pdf | 251 kB | Shaun Ewing | Jun 29, 1926 00:00 |
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US-1590252-A // Artificial line // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 251 kB | Shaun Ewing | Jun 29, 1926 00:00 | US-1590252-A // Artificial line // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 1611223.pdf | 251 kB | Shaun Ewing | Dec 21, 1926 00:00 |
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US-1611223-A // Apparatus for controlling the frequency of an alternating current // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 251 kB | Shaun Ewing | Dec 21, 1926 00:00 | US-1611223-A // Apparatus for controlling the frequency of an alternating current // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1450969.pdf | 250 kB | Shaun Ewing | Apr 10, 1923 00:00 |
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US-1450969-A // Receiving circuits for weak signal currents // Carson John R. // American Telephone & Telegraph | |||
| Version 1 (current) | 250 kB | Shaun Ewing | Apr 10, 1923 00:00 | US-1450969-A // Receiving circuits for weak signal currents // Carson John R. // American Telephone & Telegraph |
