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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| 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 2427650.pdf | 9.40 MB | Shaun Ewing | Sept 23, 1947 00:00 |
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US-2427650-A // Multiexchange community automatic telephone system // Bakker Pier // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 9.40 MB | Shaun Ewing | Sept 23, 1947 00:00 | US-2427650-A // Multiexchange community automatic telephone system // Bakker Pier // Kellogg Switchboard & Supply | ||||
| PDF File 1223349.pdf | 9.27 MB | Shaun Ewing | Apr 17, 1917 00:00 |
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US-1223349-A // Telephone system. // Francis W. Dunbar // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 9.27 MB | Shaun Ewing | Apr 17, 1917 00:00 | US-1223349-A // Telephone system. // Francis W. Dunbar // Kellogg Switchboard & Supply | ||||
| PDF File 1425728.pdf | 8.82 MB | Shaun Ewing | Aug 15, 1922 00:00 |
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US-1425728-A // Telephone-exchange system // Webster Harry G. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 8.82 MB | Shaun Ewing | Aug 15, 1922 00:00 | US-1425728-A // Telephone-exchange system // Webster Harry G. // Kellogg Switchboard & Supply | ||||
| PDF File 1576814.pdf | 8.14 MB | Shaun Ewing | Mar 16, 1926 00:00 |
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US-1576814-A // Automatic telephone system // Dunbar Francis W. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 8.14 MB | Shaun Ewing | Mar 16, 1926 00:00 | US-1576814-A // Automatic telephone system // Dunbar Francis W. // Kellogg Switchboard & Supply | ||||
| PDF File 1623336.pdf | 7.84 MB | Shaun Ewing | Apr 05, 1927 00:00 |
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US-1623336-A // Telephone system // Dunbar Francis W. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 7.84 MB | Shaun Ewing | Apr 05, 1927 00:00 | US-1623336-A // Telephone system // Dunbar Francis W. // 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 1257283.pdf | 7.53 MB | Shaun Ewing | Feb 19, 1918 00:00 |
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US-1257283-A // Automatic telephone system. // Alfred H. Dyson // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 7.53 MB | Shaun Ewing | Feb 19, 1918 00:00 | US-1257283-A // Automatic telephone system. // Alfred H. Dyson // Kellogg Switchboard & Supply | ||||
| PDF File 2587103.pdf | 7.07 MB | Shaun Ewing | Feb 26, 1952 00:00 |
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US-2587103-A // Path-selection control arrangement for primary-secondary switching systems // Jr. Richard P. Boyer, // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 7.07 MB | Shaun Ewing | Feb 26, 1952 00:00 | US-2587103-A // Path-selection control arrangement for primary-secondary switching systems // Jr. Richard P. Boyer, // Kellogg Switchboard & Supply | ||||
| PDF File 1557992.pdf | 6.92 MB | Shaun Ewing | Oct 20, 1925 00:00 |
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US-1557992-A // Telephone system // Dyson Alfred H. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 6.92 MB | Shaun Ewing | Oct 20, 1925 00:00 | US-1557992-A // Telephone system // Dyson Alfred H. // Kellogg Switchboard & Supply | ||||
| PDF File 1557993.pdf | 6.80 MB | Shaun Ewing | Oct 20, 1925 00:00 |
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US-1557993-A // Automatic telephone-exchange system // Dyson Alfred H. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 6.80 MB | Shaun Ewing | Oct 20, 1925 00:00 | US-1557993-A // Automatic telephone-exchange system // Dyson Alfred H. // Kellogg Switchboard & Supply | ||||
| PDF File 1563347.pdf | 6.79 MB | Shaun Ewing | Dec 01, 1925 00:00 |
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US-1563347-A // Automatic telephone system // Dyson Alfred H. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 6.79 MB | Shaun Ewing | Dec 01, 1925 00:00 | US-1563347-A // Automatic telephone system // Dyson Alfred H. // 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 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 2400530.pdf | 5.87 MB | Shaun Ewing | May 21, 1946 00:00 |
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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 1259967.pdf | 5.67 MB | Shaun Ewing | Mar 19, 1918 00:00 |
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US-1259967-A // Telephone system. // Alfred H. Dyson // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 5.67 MB | Shaun Ewing | Mar 19, 1918 00:00 | US-1259967-A // Telephone system. // Alfred H. Dyson // Kellogg Switchboard & Supply | ||||
| PDF File 1211688.pdf | 5.54 MB | Shaun Ewing | Jan 09, 1917 00:00 |
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US-1211688-A // Telephone system. // Francis W. Dunbar // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 5.54 MB | Shaun Ewing | Jan 09, 1917 00:00 | US-1211688-A // Telephone system. // Francis W. Dunbar // Kellogg Switchboard & Supply | ||||
| PDF File 1133113.pdf | 5.44 MB | Shaun Ewing | Mar 23, 1915 00:00 |
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US-1133113-A // Telephone system. // Francis W. Dunbar // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 5.44 MB | Shaun Ewing | Mar 23, 1915 00:00 | US-1133113-A // Telephone system. // Francis W. Dunbar // 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 2421717.pdf | 5.24 MB | Shaun Ewing | Jun 03, 1947 00:00 |
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US-2421717-A // Automatic telephone system // Saunders Norman H. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 5.24 MB | Shaun Ewing | Jun 03, 1947 00:00 | US-2421717-A // Automatic telephone system // Saunders Norman H. // Kellogg Switchboard & Supply |
