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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2257685.pdf | 516 kB | Shaun Ewing | Sept 30, 1941 00:00 |
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US-2257685-A // Oscillation generator // Hidy John William // American Telephone & Telegraph | |||
| Version 1 (current) | 516 kB | Shaun Ewing | Sept 30, 1941 00:00 | US-2257685-A // Oscillation generator // Hidy John William // American Telephone & Telegraph | ||||
| PDF File 2257683.pdf | 344 kB | Shaun Ewing | Sept 30, 1941 00:00 |
|
US-2257683-A // Ticket stacking device // Haywood Kenneth Spanogle // American Telephone & Telegraph | |||
| Version 1 (current) | 344 kB | Shaun Ewing | Sept 30, 1941 00:00 | US-2257683-A // Ticket stacking device // Haywood Kenneth Spanogle // American Telephone & Telegraph | ||||
| PDF File 2257677.pdf | 611 kB | Shaun Ewing | Sept 30, 1941 00:00 |
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US-2257677-A // Printing telegraph system // Goodwin Clayton // American Telephone & Telegraph | |||
| Version 1 (current) | 611 kB | Shaun Ewing | Sept 30, 1941 00:00 | US-2257677-A // Printing telegraph system // Goodwin Clayton // American Telephone & Telegraph | ||||
| PDF File 2257663.pdf | 803 kB | Shaun Ewing | Sept 30, 1941 00:00 |
|
US-2257663-A // Apparatus for producing interrupted alternating current // Albrecht Harold Willius // American Telephone & Telegraph | |||
| Version 1 (current) | 803 kB | Shaun Ewing | Sept 30, 1941 00:00 | US-2257663-A // Apparatus for producing interrupted alternating current // Albrecht Harold Willius // American Telephone & Telegraph | ||||
| PDF File 2257592.pdf | 613 kB | Shaun Ewing | Sept 30, 1941 00:00 |
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US-2257592-A // Directional monitoring system // Buxton Bentley Leo // American Telephone & Telegraph | |||
| Version 1 (current) | 613 kB | Shaun Ewing | Sept 30, 1941 00:00 | US-2257592-A // Directional monitoring system // Buxton Bentley Leo // American Telephone & Telegraph | ||||
| PDF File 2257553.pdf | 597 kB | Shaun Ewing | Sept 30, 1941 00:00 |
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US-2257553-A // Ribbon reverse mechanism // Hept John Anthony // American Telephone & Telegraph | |||
| Version 1 (current) | 597 kB | Shaun Ewing | Sept 30, 1941 00:00 | US-2257553-A // Ribbon reverse mechanism // Hept John Anthony // American Telephone & Telegraph | ||||
| PDF File 2252645.pdf | 258 kB | Shaun Ewing | Aug 12, 1941 00:00 |
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US-2252645-A // Apparatus for producing constant current // Rougvie James Ferguson // American Telephone & Telegraph | |||
| Version 1 (current) | 258 kB | Shaun Ewing | Aug 12, 1941 00:00 | US-2252645-A // Apparatus for producing constant current // Rougvie James Ferguson // American Telephone & Telegraph | ||||
| PDF File 2252629.pdf | 881 kB | Shaun Ewing | Aug 12, 1941 00:00 |
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US-2252629-A // Supervisory signal system // Hanley Frank Harold ; Carter Frank J. ; Davidsmeyer Orville Howard ; Lamberson Otha M. // American Telephone & Telegraph ; Bell Telephone Labor Inc | |||
| Version 1 (current) | 881 kB | Shaun Ewing | Aug 12, 1941 00:00 | US-2252629-A // Supervisory signal system // Hanley Frank Harold ; Carter Frank J. ; Davidsmeyer Orville Howard ; Lamberson Otha M. // American Telephone & Telegraph ; Bell Telephone Labor Inc | ||||
| PDF File 2252622.pdf | 908 kB | Shaun Ewing | Aug 12, 1941 00:00 |
|
US-2252622-A // Start-stop regenerative telegraph repeater // Fox Francis H. // American Telephone & Telegraph | |||
| Version 1 (current) | 908 kB | Shaun Ewing | Aug 12, 1941 00:00 | US-2252622-A // Start-stop regenerative telegraph repeater // Fox Francis H. // American Telephone & Telegraph | ||||
| PDF File 2249166.pdf | 363 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249166-A // Electrical probe // Parker George B. ; Parker Lloyd L. ; Meehan John P. // American Telephone & Telegraph | |||
| Version 1 (current) | 363 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249166-A // Electrical probe // Parker George B. ; Parker Lloyd L. ; Meehan John P. // American Telephone & Telegraph | ||||
| PDF File 2249164.pdf | 485 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249164-A // Electrical measuring system // Olson Nels Kermit // American Telephone & Telegraph | |||
| Version 1 (current) | 485 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249164-A // Electrical measuring system // Olson Nels Kermit // American Telephone & Telegraph | ||||
| PDF File 2249153.pdf | 369 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249153-A // Testing device // Martin Wade B. // American Telephone & Telegraph | |||
| Version 1 (current) | 369 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249153-A // Testing device // Martin Wade B. // American Telephone & Telegraph | ||||
| PDF File 2249103.pdf | 369 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249103-A // Open telegraph alarm circuit // Anspach Russell Jacob // American Telephone & Telegraph | |||
| Version 1 (current) | 369 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249103-A // Open telegraph alarm circuit // Anspach Russell Jacob // 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 | ||||
| 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 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 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 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 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 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 |
