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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2404772.pdf | 711 kB | Shaun Ewing | Jul 30, 1946 00:00 |
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US-2404772-A // Telephone transmitter // Brodie George H. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 711 kB | Shaun Ewing | Jul 30, 1946 00:00 | US-2404772-A // Telephone transmitter // Brodie George H. // Kellogg Switchboard & Supply | ||||
| PDF File 2400530.pdf | 5.87 MB | Shaun Ewing | May 21, 1946 00:00 |
|
US-2400530-A // Selector switching system // Bellamy John I. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 5.87 MB | Shaun Ewing | May 21, 1946 00:00 | US-2400530-A // Selector switching system // Bellamy John I. // Kellogg Switchboard & Supply | ||||
| PDF File 2394762.pdf | 430 kB | Shaun Ewing | Feb 12, 1946 00:00 |
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US-2394762-A // Method of making elastic coil cables // Geraty Paul C. // Kellogg Switchboard & Supply ; Ralph D Collins | |||
| Version 1 (current) | 430 kB | Shaun Ewing | Feb 12, 1946 00:00 | US-2394762-A // Method of making elastic coil cables // Geraty Paul C. // Kellogg Switchboard & Supply ; Ralph D Collins | ||||
| PDF File 2394360.pdf | 872 kB | Shaun Ewing | Feb 05, 1946 00:00 |
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US-2394360-A // Calling device // Bosh James E. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 872 kB | Shaun Ewing | Feb 05, 1946 00:00 | US-2394360-A // Calling device // Bosh James E. // Kellogg Switchboard & Supply | ||||
| PDF File 2388945.pdf | 1.15 MB | Shaun Ewing | Nov 13, 1945 00:00 |
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US-2388945-A // Filament-treating system // Barta Frank A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.15 MB | Shaun Ewing | Nov 13, 1945 00:00 | US-2388945-A // Filament-treating system // Barta Frank A. // Kellogg Switchboard & Supply | ||||
| PDF File 2379556.pdf | 1.82 MB | Shaun Ewing | Jul 03, 1945 00:00 |
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US-2379556-A // Watchman supervisory automatic telephone system // Wallace Bert A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.82 MB | Shaun Ewing | Jul 03, 1945 00:00 | US-2379556-A // Watchman supervisory automatic telephone system // Wallace Bert A. // Kellogg Switchboard & Supply | ||||
| PDF File 2374357.pdf | 960 kB | Shaun Ewing | Apr 24, 1945 00:00 |
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US-2374357-A // Group-call telephone system // Kiner Glenn // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 960 kB | Shaun Ewing | Apr 24, 1945 00:00 | US-2374357-A // Group-call telephone system // Kiner Glenn // Kellogg Switchboard & Supply | ||||
| PDF File 2370335.pdf | 1.47 MB | Shaun Ewing | Feb 27, 1945 00:00 |
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US-2370335-A // Allotter // Wallace Bert A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.47 MB | Shaun Ewing | Feb 27, 1945 00:00 | US-2370335-A // Allotter // Wallace Bert A. // Kellogg Switchboard & Supply | ||||
| PDF File 2366232.pdf | 1.72 MB | Shaun Ewing | Jan 02, 1945 00:00 |
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US-2366232-A // Multiexchange automatic telephone system // Bakker Pier // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.72 MB | Shaun Ewing | Jan 02, 1945 00:00 | US-2366232-A // Multiexchange automatic telephone system // Bakker Pier // Kellogg Switchboard & Supply | ||||
| PDF File 2366011.pdf | 519 kB | Shaun Ewing | Dec 26, 1944 00:00 |
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US-2366011-A // Two-way amplifier // Donaldson Harry J. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 519 kB | Shaun Ewing | Dec 26, 1944 00:00 | US-2366011-A // Two-way amplifier // Donaldson Harry J. // Kellogg Switchboard & Supply | ||||
| PDF File 2365996.pdf | 5.02 MB | Shaun Ewing | Dec 26, 1944 00:00 |
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US-2365996-A // Private branch exchange automatic telephone system // Bakker Pier // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 5.02 MB | Shaun Ewing | Dec 26, 1944 00:00 | US-2365996-A // Private branch exchange automatic telephone system // Bakker Pier // Kellogg Switchboard & Supply | ||||
| PDF File 2363095.pdf | 578 kB | Shaun Ewing | Nov 21, 1944 00:00 |
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US-2363095-A // Telephone substation ringer // Stehlik Frank J. ; Schumann Fred // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 578 kB | Shaun Ewing | Nov 21, 1944 00:00 | US-2363095-A // Telephone substation ringer // Stehlik Frank J. ; Schumann Fred // Kellogg Switchboard & Supply | ||||
| PDF File 2355139.pdf | 1.22 MB | Shaun Ewing | Aug 08, 1944 00:00 |
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US-2355139-A // Lockout telephone line circuit // Bellamy John I. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Aug 08, 1944 00:00 | US-2355139-A // Lockout telephone line circuit // Bellamy John I. // Kellogg Switchboard & Supply | ||||
| PDF File 2354660.pdf | 10.93 MB | Shaun Ewing | Aug 01, 1944 00:00 |
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US-2354660-A // Automatic telephone switch and system // Bellamy John I. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 10.93 MB | Shaun Ewing | Aug 01, 1944 00:00 | US-2354660-A // Automatic telephone switch and system // Bellamy John I. // Kellogg Switchboard & Supply | ||||
| PDF File 2351808.pdf | 6.72 MB | Shaun Ewing | Jun 20, 1944 00:00 |
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US-2351808-A // Automatic telephone system // Eaton George R. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 6.72 MB | Shaun Ewing | Jun 20, 1944 00:00 | US-2351808-A // Automatic telephone system // Eaton George R. // Kellogg Switchboard & Supply | ||||
| PDF File 2348137.pdf | 312 kB | Shaun Ewing | May 02, 1944 00:00 |
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US-2348137-A // Drop-signal holder // Kiner Glenn // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 312 kB | Shaun Ewing | May 02, 1944 00:00 | US-2348137-A // Drop-signal holder // Kiner Glenn // Kellogg Switchboard & Supply | ||||
| PDF File 2344653.pdf | 1.20 MB | Shaun Ewing | Mar 21, 1944 00:00 |
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US-2344653-A // Telephone line circuit // Staszak Michael B. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Mar 21, 1944 00:00 | US-2344653-A // Telephone line circuit // Staszak Michael B. // Kellogg Switchboard & Supply | ||||
| PDF File 2342586.pdf | 807 kB | Shaun Ewing | Feb 22, 1944 00:00 |
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US-2342586-A // Repeater system // Kiner Glenn // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 807 kB | Shaun Ewing | Feb 22, 1944 00:00 | US-2342586-A // Repeater system // Kiner Glenn // Kellogg Switchboard & Supply | ||||
| PDF File 2340777.pdf | 452 kB | Shaun Ewing | Feb 01, 1944 00:00 |
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US-2340777-A // Throat microphone // Stanley Harvey H. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 452 kB | Shaun Ewing | Feb 01, 1944 00:00 | US-2340777-A // Throat microphone // Stanley Harvey H. // Kellogg Switchboard & Supply | ||||
| PDF File 2339919.pdf | 322 kB | Shaun Ewing | Jan 25, 1944 00:00 |
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US-2339919-A // Dial with magnetic governor // Eaton George R. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 322 kB | Shaun Ewing | Jan 25, 1944 00:00 | US-2339919-A // Dial with magnetic governor // Eaton George R. // Kellogg Switchboard & Supply |
