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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1219727.pdf | 1.44 MB | Shaun Ewing | Mar 20, 1917 00:00 |
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US-1219727-A // Telephone repeating system. // Elwood Grissinger // American Telephone & Telegraph | |||
| Version 1 (current) | 1.44 MB | Shaun Ewing | Mar 20, 1917 00:00 | US-1219727-A // Telephone repeating system. // Elwood Grissinger // American Telephone & Telegraph | ||||
| PDF File 1245490.pdf | 1.44 MB | Shaun Ewing | Nov 06, 1917 00:00 |
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US-1245490-A // Telephone-service-observing system. // Edward C. Molina // American Telephone & Telegraph | |||
| Version 1 (current) | 1.44 MB | Shaun Ewing | Nov 06, 1917 00:00 | US-1245490-A // Telephone-service-observing system. // Edward C. Molina // American Telephone & Telegraph | ||||
| PDF File 1203325.pdf | 1.42 MB | Shaun Ewing | Oct 31, 1916 00:00 |
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US-1203325-A // Telephone relay or repeater. // Elwood Grissinger // American Telephone & Telegraph | |||
| Version 1 (current) | 1.42 MB | Shaun Ewing | Oct 31, 1916 00:00 | US-1203325-A // Telephone relay or repeater. // Elwood Grissinger // American Telephone & Telegraph | ||||
| PDF File 1288709.pdf | 1.40 MB | Shaun Ewing | Dec 24, 1918 00:00 |
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US-1288709-A // Duplex balancing-circuits. // Thomas Shaw // American Telephone & Telegraph | |||
| Version 1 (current) | 1.40 MB | Shaun Ewing | Dec 24, 1918 00:00 | US-1288709-A // Duplex balancing-circuits. // Thomas Shaw // American Telephone & Telegraph | ||||
| PDF File 626131.pdf | 1.38 MB | Shaun Ewing | May 30, 1899 00:00 |
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US-626131-A // Selective electric signal // John A. Barrett, Of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 1.38 MB | Shaun Ewing | May 30, 1899 00:00 | US-626131-A // Selective electric signal // John A. Barrett, Of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 1310730.pdf | 1.33 MB | Shaun Ewing | Jul 22, 1919 00:00 |
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US-1310730-A // Planograph co // William: G. Blaijvelt, Of N. Y // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 1.33 MB | Shaun Ewing | Jul 22, 1919 00:00 | US-1310730-A // Planograph co // William: G. Blaijvelt, Of N. Y // American Telephone & Telegraph, New York NY | ||||
| PDF File 719736.pdf | 1.33 MB | Shaun Ewing | Feb 03, 1903 00:00 |
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US-719736-A // Service-meter system and apparatus for telephone-exchanges. // Albert M. Bullard ; Louis A. Falk // American Telephone & Telegraph | |||
| Version 1 (current) | 1.33 MB | Shaun Ewing | Feb 03, 1903 00:00 | US-719736-A // Service-meter system and apparatus for telephone-exchanges. // Albert M. Bullard ; Louis A. Falk // American Telephone & Telegraph | ||||
| PDF File 927025.pdf | 1.30 MB | Shaun Ewing | Jul 06, 1909 00:00 |
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US-927025-A // Call-distributing telephone-exchange system. // Sidney Hand Browne // American Telephone & Telegraph | |||
| Version 1 (current) | 1.30 MB | Shaun Ewing | Jul 06, 1909 00:00 | US-927025-A // Call-distributing telephone-exchange system. // Sidney Hand Browne // American Telephone & Telegraph | ||||
| PDF File 1254476.pdf | 1.25 MB | Shaun Ewing | Jan 22, 1918 00:00 |
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US-1254476-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.25 MB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254476-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | ||||
| PDF File 1355897.pdf | 1.24 MB | Shaun Ewing | Oct 19, 1920 00:00 |
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US-1355897-A // Testing-circuit for repeaters equipped with automatic networkselectors // Demarest Charles S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.24 MB | Shaun Ewing | Oct 19, 1920 00:00 | US-1355897-A // Testing-circuit for repeaters equipped with automatic networkselectors // Demarest Charles S. // American Telephone & Telegraph | ||||
| PDF File 1245402.pdf | 1.22 MB | Shaun Ewing | Nov 06, 1917 00:00 |
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US-1245402-A // System for observing telephone service. // John F. Toomey // American Telephone & Telegraph | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Nov 06, 1917 00:00 | US-1245402-A // System for observing telephone service. // John F. Toomey // American Telephone & Telegraph | ||||
| PDF File 1254474.pdf | 1.20 MB | Shaun Ewing | Jan 22, 1918 00:00 |
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US-1254474-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254474-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | ||||
| PDF File 750704.pdf | 1.18 MB | Shaun Ewing | Jan 26, 1904 00:00 |
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US-750704-A // Telephone switching and signaling apparatus // Malcolm C. Eoety, Of Massachusetts // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 1.18 MB | Shaun Ewing | Jan 26, 1904 00:00 | US-750704-A // Telephone switching and signaling apparatus // Malcolm C. Eoety, Of Massachusetts // American Telephone & Telegraph, New York NY | ||||
| PDF File 1318937.pdf | 1.17 MB | Shaun Ewing | Oct 14, 1919 00:00 |
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US-1318937-A // toomey and c // John F. Toomey, Of New Yoe-K, And Charles S, Demarest, Of Brooklyn, New York, // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 1.17 MB | Shaun Ewing | Oct 14, 1919 00:00 | US-1318937-A // toomey and c // John F. Toomey, Of New Yoe-K, And Charles S, Demarest, Of Brooklyn, New York, // American Telephone & Telegraph, New York NY | ||||
| PDF File 1254118.pdf | 1.16 MB | Shaun Ewing | Jan 22, 1918 00:00 |
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US-1254118-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.16 MB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254118-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | ||||
| PDF File 1073589.pdf | 1.13 MB | Shaun Ewing | Sept 23, 1913 00:00 |
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US-1073589-A // Telephone-exchange system. // Sidney Hand Browne // American Telephone & Telegraph | |||
| Version 1 (current) | 1.13 MB | Shaun Ewing | Sept 23, 1913 00:00 | US-1073589-A // Telephone-exchange system. // Sidney Hand Browne // American Telephone & Telegraph | ||||
| PDF File 1261096.pdf | 1.13 MB | Shaun Ewing | Apr 02, 1918 00:00 |
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US-1261096-A // Testing apparatus. // Otto B. Blackwell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.13 MB | Shaun Ewing | Apr 02, 1918 00:00 | US-1261096-A // Testing apparatus. // Otto B. Blackwell // American Telephone & Telegraph | ||||
| PDF File 913613.pdf | 1.11 MB | Shaun Ewing | Feb 23, 1909 00:00 |
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US-913613-A // Call-distributing telephone-exchange details. // Sidney Hand Browne // American Telephone & Telegraph | |||
| Version 1 (current) | 1.11 MB | Shaun Ewing | Feb 23, 1909 00:00 | US-913613-A // Call-distributing telephone-exchange details. // Sidney Hand Browne // American Telephone & Telegraph | ||||
| PDF File 926994.pdf | 1.09 MB | Shaun Ewing | Jul 06, 1909 00:00 |
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US-926994-A // Telephone-connecting apparatus. // Edward C. Molina // American Telephone & Telegraph | |||
| Version 1 (current) | 1.09 MB | Shaun Ewing | Jul 06, 1909 00:00 | US-926994-A // Telephone-connecting apparatus. // Edward C. Molina // American Telephone & Telegraph | ||||
| PDF File 1360331.pdf | 1.08 MB | Shaun Ewing | Nov 30, 1920 00:00 |
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US-1360331-A // Testing and adjusting apparatus for cord-circuits // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.08 MB | Shaun Ewing | Nov 30, 1920 00:00 | US-1360331-A // Testing and adjusting apparatus for cord-circuits // Toomey John F. // American Telephone & Telegraph |
