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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| 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 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 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 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 2252622.pdf | 908 kB | Shaun Ewing | Aug 12, 1941 00:00 |
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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 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 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 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 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 2257663.pdf | 803 kB | Shaun Ewing | Sept 30, 1941 00:00 |
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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 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 2257683.pdf | 344 kB | Shaun Ewing | Sept 30, 1941 00:00 |
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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 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 2262541.pdf | 2.31 MB | Shaun Ewing | Nov 11, 1941 00:00 |
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US-2262541-A // Teletypewriter selective calling and switching system // Anspach Russell Jacob // American Telephone & Telegraph | |||
| Version 1 (current) | 2.31 MB | Shaun Ewing | Nov 11, 1941 00:00 | US-2262541-A // Teletypewriter selective calling and switching system // Anspach Russell Jacob // American Telephone & Telegraph | ||||
| PDF File 2262543.pdf | 786 kB | Shaun Ewing | Nov 11, 1941 00:00 |
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US-2262543-A // Communication system // Borgeson Carl Anders // American Telephone & Telegraph | |||
| Version 1 (current) | 786 kB | Shaun Ewing | Nov 11, 1941 00:00 | US-2262543-A // Communication system // Borgeson Carl Anders // American Telephone & Telegraph | ||||
| PDF File 2262567.pdf | 752 kB | Shaun Ewing | Nov 11, 1941 00:00 |
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US-2262567-A // Teletypewriter indicating system // Votaw Clarence J. // American Telephone & Telegraph | |||
| Version 1 (current) | 752 kB | Shaun Ewing | Nov 11, 1941 00:00 | US-2262567-A // Teletypewriter indicating system // Votaw Clarence J. // American Telephone & Telegraph | ||||
| PDF File 2265044.pdf | 302 kB | Shaun Ewing | Dec 02, 1941 00:00 |
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US-2265044-A // Secrecy system // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 302 kB | Shaun Ewing | Dec 02, 1941 00:00 | US-2265044-A // Secrecy system // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 2265056.pdf | 1.21 MB | Shaun Ewing | Dec 02, 1941 00:00 |
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US-2265056-A // Radio telephone system // Bowers Albert Franklin // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Dec 02, 1941 00:00 | US-2265056-A // Radio telephone system // Bowers Albert Franklin // American Telephone & Telegraph | ||||
| PDF File 2265067.pdf | 165 kB | Shaun Ewing | Dec 02, 1941 00:00 |
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US-2265067-A // Transmission system // Ellestad Irwin M. // American Telephone & Telegraph | |||
| Version 1 (current) | 165 kB | Shaun Ewing | Dec 02, 1941 00:00 | US-2265067-A // Transmission system // Ellestad Irwin M. // American Telephone & Telegraph | ||||
| PDF File 2265120.pdf | 556 kB | Shaun Ewing | Dec 02, 1941 00:00 |
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US-2265120-A // Secret signaling system // Perry Donald Burke // American Telephone & Telegraph | |||
| Version 1 (current) | 556 kB | Shaun Ewing | Dec 02, 1941 00:00 | US-2265120-A // Secret signaling system // Perry Donald Burke // American Telephone & Telegraph |
