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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1301827.pdf | 268 kB | Shaun Ewing | Apr 29, 1919 00:00 |
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US-1301827-A // Test-connector. // William L. Flye // American Telephone & Telegraph | |||
| Version 1 (current) | 268 kB | Shaun Ewing | Apr 29, 1919 00:00 | US-1301827-A // Test-connector. // William L. Flye // American Telephone & Telegraph | ||||
| PDF File 1295816.pdf | 807 kB | Shaun Ewing | Feb 25, 1919 00:00 |
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US-1295816-A // Testing apparatus for four-wire repeater-circuits. // John F. Toomey // American Telephone & Telegraph | |||
| Version 1 (current) | 807 kB | Shaun Ewing | Feb 25, 1919 00:00 | US-1295816-A // Testing apparatus for four-wire repeater-circuits. // John F. Toomey // American Telephone & Telegraph | ||||
| PDF File 1290808.pdf | 743 kB | Shaun Ewing | Jan 07, 1919 00:00 |
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US-1290808-A // Composite ringing apparatus. // John F. Toomey // American Telephone & Telegraph | |||
| Version 1 (current) | 743 kB | Shaun Ewing | Jan 07, 1919 00:00 | US-1290808-A // Composite ringing apparatus. // John F. Toomey // 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 1287831.pdf | 670 kB | Shaun Ewing | Dec 17, 1918 00:00 |
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US-1287831-A // System for compensating for differences of potentials. // Henry M. Bascom // American Telephone & Telegraph | |||
| Version 1 (current) | 670 kB | Shaun Ewing | Dec 17, 1918 00:00 | US-1287831-A // System for compensating for differences of potentials. // Henry M. Bascom // American Telephone & Telegraph | ||||
| PDF File 1283687.pdf | 1.01 MB | Shaun Ewing | Nov 05, 1918 00:00 |
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US-1283687-A // Signaling system. // Leo H. Darrow // American Telephone & Telegraph | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | Nov 05, 1918 00:00 | US-1283687-A // Signaling system. // Leo H. Darrow // American Telephone & Telegraph | ||||
| PDF File 1281084.pdf | 595 kB | Shaun Ewing | Oct 08, 1918 00:00 |
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US-1281084-A // Demagnetizing apparatus. // Thomas Shaw ; Clement J. Koukol // American Telephone & Telegraph | |||
| Version 1 (current) | 595 kB | Shaun Ewing | Oct 08, 1918 00:00 | US-1281084-A // Demagnetizing apparatus. // Thomas Shaw ; Clement J. Koukol // American Telephone & Telegraph | ||||
| PDF File 1280969.pdf | 431 kB | Shaun Ewing | Oct 08, 1918 00:00 |
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US-1280969-A // Through-ringing amplifier. // Charles S. Demarest // American Telephone & Telegraph | |||
| Version 1 (current) | 431 kB | Shaun Ewing | Oct 08, 1918 00:00 | US-1280969-A // Through-ringing amplifier. // Charles S. Demarest // American Telephone & Telegraph | ||||
| PDF File 1279882.pdf | 404 kB | Shaun Ewing | Sept 24, 1918 00:00 |
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US-1279882-A // Signaling system. // George W. Kuhn // American Telephone & Telegraph | |||
| Version 1 (current) | 404 kB | Shaun Ewing | Sept 24, 1918 00:00 | US-1279882-A // Signaling system. // George W. Kuhn // American Telephone & Telegraph | ||||
| PDF File 1277274.pdf | 408 kB | Shaun Ewing | Aug 27, 1918 00:00 |
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US-1277274-A // Artificial-line-selecting system. // John F. Toomey ; Walter V. H. Read // American Telephone & Telegraph | |||
| Version 1 (current) | 408 kB | Shaun Ewing | Aug 27, 1918 00:00 | US-1277274-A // Artificial-line-selecting system. // John F. Toomey ; Walter V. H. Read // American Telephone & Telegraph | ||||
| PDF File 1273154.pdf | 454 kB | Shaun Ewing | Jul 23, 1918 00:00 |
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US-1273154-A // Relay selecting-circuit for artificial lines. // Charles S. Demarest // American Telephone & Telegraph | |||
| Version 1 (current) | 454 kB | Shaun Ewing | Jul 23, 1918 00:00 | US-1273154-A // Relay selecting-circuit for artificial lines. // Charles S. Demarest // American Telephone & Telegraph | ||||
| PDF File 1270465.pdf | 552 kB | Shaun Ewing | Jun 25, 1918 00:00 |
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US-1270465-A // Automatic switching means. // John F. Toomey // American Telephone & Telegraph | |||
| Version 1 (current) | 552 kB | Shaun Ewing | Jun 25, 1918 00:00 | US-1270465-A // Automatic switching means. // John F. Toomey // American Telephone & Telegraph | ||||
| PDF File 1265851.pdf | 451 kB | Shaun Ewing | May 14, 1918 00:00 |
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US-1265851-A // Mechanism for installing transmission line-wires. // Harry C. Williams // American Telephone & Telegraph | |||
| Version 1 (current) | 451 kB | Shaun Ewing | May 14, 1918 00:00 | US-1265851-A // Mechanism for installing transmission line-wires. // Harry C. Williams // American Telephone & Telegraph | ||||
| PDF File 1262912.pdf | 261 kB | Shaun Ewing | Apr 16, 1918 00:00 |
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US-1262912-A // Means for preventing disturbances in substation telephone sets. // Henry M. Bascom // American Telephone & Telegraph | |||
| Version 1 (current) | 261 kB | Shaun Ewing | Apr 16, 1918 00:00 | US-1262912-A // Means for preventing disturbances in substation telephone sets. // Henry M. Bascom // 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 1256889.pdf | 474 kB | Shaun Ewing | Feb 19, 1918 00:00 |
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US-1256889-A // Wireless duplex signaling system. // Lloyd Espenschied // American Telephone & Telegraph | |||
| Version 1 (current) | 474 kB | Shaun Ewing | Feb 19, 1918 00:00 | US-1256889-A // Wireless duplex signaling system. // Lloyd Espenschied // 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 1254475.pdf | 1.05 MB | Shaun Ewing | Jan 22, 1918 00:00 |
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US-1254475-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254475-A // Signaling-circuit. // George A. Campbell // 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 1254473.pdf | 1.98 MB | Shaun Ewing | Jan 22, 1918 00:00 |
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US-1254473-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.98 MB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254473-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph |
