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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2231602.pdf | 662 kB | Shaun Ewing | Feb 11, 1941 00:00 |
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US-2231602-A // Multiplex high frequency signaling // Southworth George C. // American Telephone & Telegraph | |||
| Version 1 (current) | 662 kB | Shaun Ewing | Feb 11, 1941 00:00 | US-2231602-A // Multiplex high frequency signaling // Southworth George C. // American Telephone & Telegraph | ||||
| PDF File 2231906.pdf | 474 kB | Shaun Ewing | Feb 18, 1941 00:00 |
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US-2231906-A // Calculating span clearance rule // Hansen Carl Harold // American Telephone & Telegraph | |||
| Version 1 (current) | 474 kB | Shaun Ewing | Feb 18, 1941 00:00 | US-2231906-A // Calculating span clearance rule // Hansen Carl Harold // American Telephone & Telegraph | ||||
| PDF File 2232891.pdf | 1.24 MB | Shaun Ewing | Feb 25, 1941 00:00 |
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US-2232891-A // Condenser telephone transmitter circuit // Stone John Stone // American Telephone & Telegraph | |||
| Version 1 (current) | 1.24 MB | Shaun Ewing | Feb 25, 1941 00:00 | US-2232891-A // Condenser telephone transmitter circuit // Stone John Stone // American Telephone & Telegraph | ||||
| PDF File 2232912.pdf | 674 kB | Shaun Ewing | Feb 25, 1941 00:00 |
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US-2232912-A // Three-element carrier code arrangement // Hanley Frank Harold // American Telephone & Telegraph | |||
| Version 1 (current) | 674 kB | Shaun Ewing | Feb 25, 1941 00:00 | US-2232912-A // Three-element carrier code arrangement // Hanley Frank Harold // American Telephone & Telegraph | ||||
| PDF File 2237473.pdf | 779 kB | Shaun Ewing | Apr 08, 1941 00:00 |
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US-2237473-A // Teletypewriter switching system // Britt Horace James // American Telephone & Telegraph | |||
| Version 1 (current) | 779 kB | Shaun Ewing | Apr 08, 1941 00:00 | US-2237473-A // Teletypewriter switching system // Britt Horace James // American Telephone & Telegraph | ||||
| PDF File 2237474.pdf | 260 kB | Shaun Ewing | Apr 08, 1941 00:00 |
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US-2237474-A // Device for repairing cable terminal binding posts // Channell James W. // American Telephone & Telegraph | |||
| Version 1 (current) | 260 kB | Shaun Ewing | Apr 08, 1941 00:00 | US-2237474-A // Device for repairing cable terminal binding posts // Channell James W. // American Telephone & Telegraph | ||||
| PDF File 2237492.pdf | 255 kB | Shaun Ewing | Apr 08, 1941 00:00 |
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US-2237492-A // Electrical network // Landenberger Charles F. ; Talley Thomas J. // American Telephone & Telegraph | |||
| Version 1 (current) | 255 kB | Shaun Ewing | Apr 08, 1941 00:00 | US-2237492-A // Electrical network // Landenberger Charles F. ; Talley Thomas J. // American Telephone & Telegraph | ||||
| PDF File 2237498.pdf | 870 kB | Shaun Ewing | Apr 08, 1941 00:00 |
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US-2237498-A // Telegraph system // Neiswinter James T. // American Telephone & Telegraph | |||
| Version 1 (current) | 870 kB | Shaun Ewing | Apr 08, 1941 00:00 | US-2237498-A // Telegraph system // Neiswinter James T. // American Telephone & Telegraph | ||||
| PDF File 2240974.pdf | 238 kB | Shaun Ewing | May 06, 1941 00:00 |
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US-2240974-A // Holder for paper sheets // Armstrong Frank Coffey ; Meter Karl Kittson Van // American Telephone & Telegraph | |||
| Version 1 (current) | 238 kB | Shaun Ewing | May 06, 1941 00:00 | US-2240974-A // Holder for paper sheets // Armstrong Frank Coffey ; Meter Karl Kittson Van // American Telephone & Telegraph | ||||
| PDF File 2244041.pdf | 591 kB | Shaun Ewing | Jun 03, 1941 00:00 |
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US-2244041-A // Transmission measuring system // Andrews Joseph Frank // American Telephone & Telegraph | |||
| Version 1 (current) | 591 kB | Shaun Ewing | Jun 03, 1941 00:00 | US-2244041-A // Transmission measuring system // Andrews Joseph Frank // American Telephone & Telegraph | ||||
| PDF File 2244058.pdf | 316 kB | Shaun Ewing | Jun 03, 1941 00:00 |
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US-2244058-A // Interrupter circuit // Crofford Daniel Osmund // American Telephone & Telegraph | |||
| Version 1 (current) | 316 kB | Shaun Ewing | Jun 03, 1941 00:00 | US-2244058-A // Interrupter circuit // Crofford Daniel Osmund // American Telephone & Telegraph | ||||
| PDF File 2244074.pdf | 211 kB | Shaun Ewing | Jun 03, 1941 00:00 |
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US-2244074-A // Reversible line feed for teletypewriters // Martin Wade B. ; Townsend George Franklin // American Telephone & Telegraph | |||
| Version 1 (current) | 211 kB | Shaun Ewing | Jun 03, 1941 00:00 | US-2244074-A // Reversible line feed for teletypewriters // Martin Wade B. ; Townsend George Franklin // American Telephone & Telegraph | ||||
| PDF File 2244566.pdf | 753 kB | Shaun Ewing | Jun 03, 1941 00:00 |
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US-2244566-A // Telegraph test board // Neiswinter James Trapp // American Telephone & Telegraph | |||
| Version 1 (current) | 753 kB | Shaun Ewing | Jun 03, 1941 00:00 | US-2244566-A // Telegraph test board // Neiswinter James Trapp // American Telephone & Telegraph | ||||
| PDF File 2244596.pdf | 867 kB | Shaun Ewing | Jun 03, 1941 00:00 |
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US-2244596-A // Automatic telephone system // Anderson Gustave Adolph // American Telephone & Telegraph | |||
| Version 1 (current) | 867 kB | Shaun Ewing | Jun 03, 1941 00:00 | US-2244596-A // Automatic telephone system // Anderson Gustave Adolph // American Telephone & Telegraph | ||||
| PDF File 2244597.pdf | 1.16 MB | Shaun Ewing | Jun 03, 1941 00:00 |
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US-2244597-A // Telegraph system // Anspach Russell Jacob // American Telephone & Telegraph | |||
| Version 1 (current) | 1.16 MB | Shaun Ewing | Jun 03, 1941 00:00 | US-2244597-A // Telegraph system // Anspach Russell Jacob // American Telephone & Telegraph | ||||
| PDF File 2244609.pdf | 307 kB | Shaun Ewing | Jun 03, 1941 00:00 |
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US-2244609-A // Calling device // Cosgrove Frank A. // American Telephone & Telegraph | |||
| Version 1 (current) | 307 kB | Shaun Ewing | Jun 03, 1941 00:00 | US-2244609-A // Calling device // Cosgrove Frank A. // American Telephone & Telegraph | ||||
| PDF File 2245859.pdf | 330 kB | Shaun Ewing | Jun 17, 1941 00:00 |
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US-2245859-A // Device for cleaning electrical and associated equipment // Hunter Frederick Raymond // American Telephone & Telegraph | |||
| Version 1 (current) | 330 kB | Shaun Ewing | Jun 17, 1941 00:00 | US-2245859-A // Device for cleaning electrical and associated equipment // Hunter Frederick Raymond // American Telephone & Telegraph | ||||
| PDF File 2248096.pdf | 445 kB | Shaun Ewing | Jul 08, 1941 00:00 |
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US-2248096-A // Testing circuit // Lane Leland Gifford // American Telephone & Telegraph | |||
| Version 1 (current) | 445 kB | Shaun Ewing | Jul 08, 1941 00:00 | US-2248096-A // Testing circuit // Lane Leland Gifford // American Telephone & Telegraph | ||||
| PDF File 2248923.pdf | 614 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2248923-A // Communication system // Hanley Frank Harold // American Telephone & Telegraph | |||
| Version 1 (current) | 614 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2248923-A // Communication system // Hanley Frank Harold // American Telephone & Telegraph | ||||
| PDF File 2249099.pdf | 371 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249099-A // Direct current power system // Walton Otto Henry // American Telephone & Telegraph | |||
| Version 1 (current) | 371 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249099-A // Direct current power system // Walton Otto Henry // American Telephone & Telegraph |
