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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2339434.pdf | 690 kB | Shaun Ewing | Jan 18, 1944 00:00 |
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US-2339434-A // Contact-spring stack-up // Stehlik Frank J. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 690 kB | Shaun Ewing | Jan 18, 1944 00:00 | US-2339434-A // Contact-spring stack-up // Stehlik Frank J. // Kellogg Switchboard & Supply | ||||
| PDF File 2338208.pdf | 336 kB | Shaun Ewing | Jan 04, 1944 00:00 |
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US-2338208-A // Pole changer // Shaver John // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 336 kB | Shaun Ewing | Jan 04, 1944 00:00 | US-2338208-A // Pole changer // Shaver John // Kellogg Switchboard & Supply | ||||
| PDF File 2334333.pdf | 999 kB | Shaun Ewing | Nov 16, 1943 00:00 |
|
US-2334333-A // Train dispatcher signal system // Kiner Glenn // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 999 kB | Shaun Ewing | Nov 16, 1943 00:00 | US-2334333-A // Train dispatcher signal system // Kiner Glenn // Kellogg Switchboard & Supply | ||||
| PDF File 2333744.pdf | 7.56 MB | Shaun Ewing | Nov 09, 1943 00:00 |
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US-2333744-A // Automatic telephone system // Saunders Norman H. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 7.56 MB | Shaun Ewing | Nov 09, 1943 00:00 | US-2333744-A // Automatic telephone system // Saunders Norman H. // Kellogg Switchboard & Supply | ||||
| PDF File 2325151.pdf | 5.37 MB | Shaun Ewing | Jul 27, 1943 00:00 |
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US-2325151-A // 100-line all relay system // Saunders Norman H. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 5.37 MB | Shaun Ewing | Jul 27, 1943 00:00 | US-2325151-A // 100-line all relay system // Saunders Norman H. // Kellogg Switchboard & Supply | ||||
| PDF File 2322864.pdf | 658 kB | Shaun Ewing | Jun 29, 1943 00:00 |
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US-2322864-A // Trouble cutoff system // Mccarthy Fred M. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 658 kB | Shaun Ewing | Jun 29, 1943 00:00 | US-2322864-A // Trouble cutoff system // Mccarthy Fred M. // Kellogg Switchboard & Supply | ||||
| PDF File 2321588.pdf | 6.63 MB | Shaun Ewing | Jun 15, 1943 00:00 |
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US-2321588-A // Automatic telephone system // Eaton George R. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 6.63 MB | Shaun Ewing | Jun 15, 1943 00:00 | US-2321588-A // Automatic telephone system // Eaton George R. // Kellogg Switchboard & Supply | ||||
| PDF File 2316730.pdf | 662 kB | Shaun Ewing | Apr 13, 1943 00:00 |
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US-2316730-A // Pole changer control circuit // Wallace Bert A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 662 kB | Shaun Ewing | Apr 13, 1943 00:00 | US-2316730-A // Pole changer control circuit // Wallace Bert A. // Kellogg Switchboard & Supply | ||||
| PDF File 2315020.pdf | 317 kB | Shaun Ewing | Mar 30, 1943 00:00 |
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US-2315020-A // Gang relay // Saunders Norman H. ; Judsen Nils A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 317 kB | Shaun Ewing | Mar 30, 1943 00:00 | US-2315020-A // Gang relay // Saunders Norman H. ; Judsen Nils A. // Kellogg Switchboard & Supply | ||||
| PDF File 2310481.pdf | 639 kB | Shaun Ewing | Feb 09, 1943 00:00 |
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US-2310481-A // Two-way trunk circuit // Wallace Bert A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 639 kB | Shaun Ewing | Feb 09, 1943 00:00 | US-2310481-A // Two-way trunk circuit // Wallace Bert A. // Kellogg Switchboard & Supply | ||||
| PDF File 2305968.pdf | 1.98 MB | Shaun Ewing | Dec 22, 1942 00:00 |
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US-2305968-A // Telephone trunking system // Kiner Glenn // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.98 MB | Shaun Ewing | Dec 22, 1942 00:00 | US-2305968-A // Telephone trunking system // Kiner Glenn // Kellogg Switchboard & Supply | ||||
| PDF File 2305939.pdf | 1.07 MB | Shaun Ewing | Dec 22, 1942 00:00 |
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US-2305939-A // Universal cord circuit // Wallace Bert A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.07 MB | Shaun Ewing | Dec 22, 1942 00:00 | US-2305939-A // Universal cord circuit // Wallace Bert A. // Kellogg Switchboard & Supply | ||||
| PDF File 2300186.pdf | 1.19 MB | Shaun Ewing | Oct 27, 1942 00:00 |
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US-2300186-A // Telephone system // Wallace Bert A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Oct 27, 1942 00:00 | US-2300186-A // Telephone system // Wallace Bert A. // Kellogg Switchboard & Supply | ||||
| PDF File 2300037.pdf | 467 kB | Shaun Ewing | Oct 27, 1942 00:00 |
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US-2300037-A // Alarm system // Saunders Norman H. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 467 kB | Shaun Ewing | Oct 27, 1942 00:00 | US-2300037-A // Alarm system // Saunders Norman H. // Kellogg Switchboard & Supply | ||||
| PDF File 2292183.pdf | 1018 kB | Shaun Ewing | Aug 04, 1942 00:00 |
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US-2292183-A // Code call interrupter circuit // Wallace Bert A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1018 kB | Shaun Ewing | Aug 04, 1942 00:00 | US-2292183-A // Code call interrupter circuit // Wallace Bert A. // Kellogg Switchboard & Supply | ||||
| PDF File 2281564.pdf | 2.34 MB | Shaun Ewing | May 05, 1942 00:00 |
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US-2281564-A // Automatic telephone apparatus and circuits // Eaton George R. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 2.34 MB | Shaun Ewing | May 05, 1942 00:00 | US-2281564-A // Automatic telephone apparatus and circuits // Eaton George R. // Kellogg Switchboard & Supply | ||||
| PDF File 2279531.pdf | 1.51 MB | Shaun Ewing | Apr 14, 1942 00:00 |
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US-2279531-A // Automatic telephone system // Saunders Norman H. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.51 MB | Shaun Ewing | Apr 14, 1942 00:00 | US-2279531-A // Automatic telephone system // Saunders Norman H. // Kellogg Switchboard & Supply | ||||
| PDF File 2228392.pdf | 1.61 MB | Shaun Ewing | Jan 14, 1941 00:00 |
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US-2228392-A // Telephone system // Kiner Glenn // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.61 MB | Shaun Ewing | Jan 14, 1941 00:00 | US-2228392-A // Telephone system // Kiner Glenn // Kellogg Switchboard & Supply | ||||
| PDF File 2209214.pdf | 397 kB | Shaun Ewing | Jul 23, 1940 00:00 |
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US-2209214-A // Gang relay // Wallace Bert A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 397 kB | Shaun Ewing | Jul 23, 1940 00:00 | US-2209214-A // Gang relay // Wallace Bert A. // Kellogg Switchboard & Supply | ||||
| PDF File 2204346.pdf | 585 kB | Shaun Ewing | Jun 11, 1940 00:00 |
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US-2204346-A // Time recorder system // Eaton George R. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 585 kB | Shaun Ewing | Jun 11, 1940 00:00 | US-2204346-A // Time recorder system // Eaton George R. // Kellogg Switchboard & Supply |
