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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1403671.pdf | 2.33 MB | Shaun Ewing | Jan 17, 1922 00:00 |
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US-1403671-A // Telephone system // Dean William W. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 2.33 MB | Shaun Ewing | Jan 17, 1922 00:00 | US-1403671-A // Telephone system // Dean William W. // Kellogg Switchboard & Supply | ||||
| PDF File 1405175.pdf | 1.98 MB | Shaun Ewing | Jan 31, 1922 00:00 |
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US-1405175-A // Telephone system // Yanochowski George A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.98 MB | Shaun Ewing | Jan 31, 1922 00:00 | US-1405175-A // Telephone system // Yanochowski George A. // Kellogg Switchboard & Supply | ||||
| PDF File 1408125.pdf | 4.38 MB | Shaun Ewing | Feb 28, 1922 00:00 |
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US-1408125-A // Telephone-exchange system // Mueller George E. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 4.38 MB | Shaun Ewing | Feb 28, 1922 00:00 | US-1408125-A // Telephone-exchange system // Mueller George E. // Kellogg Switchboard & Supply | ||||
| PDF File 1411465.pdf | 926 kB | Shaun Ewing | Apr 04, 1922 00:00 |
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US-1411465-A // Operator's circuits // White Harold T. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 926 kB | Shaun Ewing | Apr 04, 1922 00:00 | US-1411465-A // Operator's circuits // White Harold T. // Kellogg Switchboard & Supply | ||||
| PDF File 1413027.pdf | 2.48 MB | Shaun Ewing | Apr 18, 1922 00:00 |
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US-1413027-A // Automatic telephone system // Ide Harry H. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 2.48 MB | Shaun Ewing | Apr 18, 1922 00:00 | US-1413027-A // Automatic telephone system // Ide Harry H. // Kellogg Switchboard & Supply | ||||
| PDF File 1421493.pdf | 793 kB | Shaun Ewing | Jul 04, 1922 00:00 |
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US-1421493-A // Ignition and lighting switch // Kellogg Leroy D. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 793 kB | Shaun Ewing | Jul 04, 1922 00:00 | US-1421493-A // Ignition and lighting switch // Kellogg Leroy D. // Kellogg Switchboard & Supply | ||||
| PDF File 1423897.pdf | 2.34 MB | Shaun Ewing | Jul 25, 1922 00:00 |
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US-1423897-A // Connector switch // Yanochowski George A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 2.34 MB | Shaun Ewing | Jul 25, 1922 00:00 | US-1423897-A // Connector switch // Yanochowski George A. // Kellogg Switchboard & Supply | ||||
| PDF File 1423898.pdf | 2.49 MB | Shaun Ewing | Jul 25, 1922 00:00 |
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US-1423898-A // Automatic telephone system // Yanochowski George A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 2.49 MB | Shaun Ewing | Jul 25, 1922 00:00 | US-1423898-A // Automatic telephone system // Yanochowski George A. // Kellogg Switchboard & Supply | ||||
| PDF File 1423899.pdf | 2.04 MB | Shaun Ewing | Jul 25, 1922 00:00 |
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US-1423899-A // Automatic telephone system // Yanochowski George A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 2.04 MB | Shaun Ewing | Jul 25, 1922 00:00 | US-1423899-A // Automatic telephone system // Yanochowski George A. // 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 1428761.pdf | 1.28 MB | Shaun Ewing | Sept 12, 1922 00:00 |
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US-1428761-A // Trunk circuit with instantaneous disconnect and recall // Currier Hiram D. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.28 MB | Shaun Ewing | Sept 12, 1922 00:00 | US-1428761-A // Trunk circuit with instantaneous disconnect and recall // Currier Hiram D. // Kellogg Switchboard & Supply | ||||
| PDF File 1428762.pdf | 3.01 MB | Shaun Ewing | Sept 12, 1922 00:00 |
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US-1428762-A // Telephone system // Currier Hiram D. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 3.01 MB | Shaun Ewing | Sept 12, 1922 00:00 | US-1428762-A // Telephone system // Currier Hiram D. // Kellogg Switchboard & Supply | ||||
| PDF File 1429241.pdf | 1.51 MB | Shaun Ewing | Sept 19, 1922 00:00 |
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US-1429241-A // Telephone system // Hayden Jesse F. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.51 MB | Shaun Ewing | Sept 19, 1922 00:00 | US-1429241-A // Telephone system // Hayden Jesse F. // Kellogg Switchboard & Supply | ||||
| PDF File 1431925.pdf | 741 kB | Shaun Ewing | Oct 17, 1922 00:00 |
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US-1431925-A // Desk stand // Bohlman Ernest A. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 741 kB | Shaun Ewing | Oct 17, 1922 00:00 | US-1431925-A // Desk stand // Bohlman Ernest A. // Kellogg Switchboard & Supply | ||||
| PDF File 1438170.pdf | 1.64 MB | Shaun Ewing | Dec 12, 1922 00:00 |
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US-1438170-A // Telephone system with flickering recall // Currier Hiram D. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.64 MB | Shaun Ewing | Dec 12, 1922 00:00 | US-1438170-A // Telephone system with flickering recall // Currier Hiram D. // Kellogg Switchboard & Supply | ||||
| PDF File 1439036.pdf | 458 kB | Shaun Ewing | Dec 19, 1922 00:00 |
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US-1439036-A // Voltage-regulating circuit // Suekoff Samuel // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 458 kB | Shaun Ewing | Dec 19, 1922 00:00 | US-1439036-A // Voltage-regulating circuit // Suekoff Samuel // Kellogg Switchboard & Supply | ||||
| PDF File 1439071.pdf | 1.66 MB | Shaun Ewing | Dec 19, 1922 00:00 |
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US-1439071-A // Secret-service cord circuits // Currier Hiram D. // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.66 MB | Shaun Ewing | Dec 19, 1922 00:00 | US-1439071-A // Secret-service cord circuits // Currier Hiram D. // Kellogg Switchboard & Supply | ||||
| PDF File 1440110.pdf | 1.75 MB | Shaun Ewing | Dec 26, 1922 00:00 |
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US-1440110-A // Trunk circuits // Sparks Charles // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 1.75 MB | Shaun Ewing | Dec 26, 1922 00:00 | US-1440110-A // Trunk circuits // Sparks Charles // Kellogg Switchboard & Supply | ||||
| PDF File 1440111.pdf | 2.23 MB | Shaun Ewing | Dec 26, 1922 00:00 |
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US-1440111-A // Telephone system // Sparks Charles // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 2.23 MB | Shaun Ewing | Dec 26, 1922 00:00 | US-1440111-A // Telephone system // Sparks Charles // Kellogg Switchboard & Supply | ||||
| PDF File 1440112.pdf | 2.27 MB | Shaun Ewing | Dec 26, 1922 00:00 |
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US-1440112-A // Telephone system // Sparks Charles // Kellogg Switchboard & Supply | |||
| Version 1 (current) | 2.27 MB | Shaun Ewing | Dec 26, 1922 00:00 | US-1440112-A // Telephone system // Sparks Charles // Kellogg Switchboard & Supply |
