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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2522003.pdf | 1.24 MB | Shaun Ewing | Sept 12, 1950 00:00 |
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US-2522003-A // Teletypewriter switching system // Walker Charles Robert // American Telephone & Telegraph | |||
| Version 1 (current) | 1.24 MB | Shaun Ewing | Sept 12, 1950 00:00 | US-2522003-A // Teletypewriter switching system // Walker Charles Robert // American Telephone & Telegraph | ||||
| PDF File 3135833.pdf | 1.23 MB | Shaun Ewing | Jun 02, 1964 00:00 |
|
US-3135833-A // Transmission loss pad control system // Macleod Donald A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.23 MB | Shaun Ewing | Jun 02, 1964 00:00 | US-3135833-A // Transmission loss pad control system // Macleod Donald A. // American Telephone & Telegraph | ||||
| PDF File 2401454.pdf | 1.21 MB | Shaun Ewing | Jun 04, 1946 00:00 |
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US-2401454-A // Teletypewriter secrecy system // Bemis Edwin Walter // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Jun 04, 1946 00:00 | US-2401454-A // Teletypewriter secrecy system // Bemis Edwin Walter // American Telephone & Telegraph | ||||
| PDF File 2961488.pdf | 1.21 MB | Shaun Ewing | Nov 22, 1960 00:00 |
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US-2961488-A // Permutation code selecting circuit // Cameron Phillip G. ; Clark Orville A. ; Maxwell John L. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Nov 22, 1960 00:00 | US-2961488-A // Permutation code selecting circuit // Cameron Phillip G. ; Clark Orville A. ; Maxwell John L. // 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 3057965.pdf | 1.20 MB | Shaun Ewing | Oct 09, 1962 00:00 |
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US-3057965-A // Braille telephone switchboard unit // Banks Harry R. ; Nickerson Charles // American Telephone & Telegraph | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Oct 09, 1962 00:00 | US-3057965-A // Braille telephone switchboard unit // Banks Harry R. ; Nickerson Charles // American Telephone & Telegraph | ||||
| PDF File 2358586.pdf | 1.19 MB | Shaun Ewing | Sept 19, 1944 00:00 |
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US-2358586-A // Telephone call transmitter // Newell Charles Earnest // American Telephone & Telegraph | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Sept 19, 1944 00:00 | US-2358586-A // Telephone call transmitter // Newell Charles Earnest // American Telephone & Telegraph | ||||
| PDF File 3122611.pdf | 1.18 MB | Shaun Ewing | Feb 25, 1964 00:00 |
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US-3122611-A // Rate determining equipment // Wheeler Charles L. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.18 MB | Shaun Ewing | Feb 25, 1964 00:00 | US-3122611-A // Rate determining equipment // Wheeler Charles L. // American Telephone & Telegraph | ||||
| PDF File 2244597.pdf | 1.16 MB | Shaun Ewing | Jun 03, 1941 00:00 |
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US-2244597-A // Telegraph system // Anspach Russell Jacob // American Telephone & Telegraph | |||
| Version 1 (current) | 1.16 MB | Shaun Ewing | Jun 03, 1941 00:00 | US-2244597-A // Telegraph system // Anspach Russell Jacob // American Telephone & Telegraph | ||||
| PDF File 2337875.pdf | 1.16 MB | Shaun Ewing | Dec 28, 1943 00:00 |
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US-2337875-A // Telephone system // Dewire Donald Stevens // American Telephone & Telegraph | |||
| Version 1 (current) | 1.16 MB | Shaun Ewing | Dec 28, 1943 00:00 | US-2337875-A // Telephone system // Dewire Donald Stevens // American Telephone & Telegraph | ||||
| PDF File 3246082.pdf | 1.16 MB | Shaun Ewing | Apr 12, 1966 00:00 |
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US-3246082-A // Telephone hold program system // Levy Alfred // Levy Alfred | |||
| Version 1 (current) | 1.16 MB | Shaun Ewing | Apr 12, 1966 00:00 | US-3246082-A // Telephone hold program system // Levy Alfred // Levy Alfred | ||||
| PDF File 2948777.pdf | 1.15 MB | Shaun Ewing | Aug 09, 1960 00:00 |
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US-2948777-A // Test set for selector mechanism // Andrews Clayton F. ; Chamberlin Daniel W. ; Neiswinter James T. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.15 MB | Shaun Ewing | Aug 09, 1960 00:00 | US-2948777-A // Test set for selector mechanism // Andrews Clayton F. ; Chamberlin Daniel W. ; Neiswinter James T. // American Telephone & Telegraph | ||||
| PDF File 2947803.pdf | 1.14 MB | Shaun Ewing | Aug 02, 1960 00:00 |
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US-2947803-A // Clock controlled automatic recycling switching circuit // Hanley Frank H. ; Votaw Clarence J. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.14 MB | Shaun Ewing | Aug 02, 1960 00:00 | US-2947803-A // Clock controlled automatic recycling switching circuit // Hanley Frank H. ; Votaw Clarence J. // American Telephone & Telegraph | ||||
| PDF File 3082299.pdf | 1.13 MB | Shaun Ewing | Mar 19, 1963 00:00 |
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US-3082299-A // Alarm testing device // Reter George A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.13 MB | Shaun Ewing | Mar 19, 1963 00:00 | US-3082299-A // Alarm testing device // Reter George A. // American Telephone & Telegraph | ||||
| PDF File 2334575.pdf | 1.12 MB | Shaun Ewing | Nov 16, 1943 00:00 |
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US-2334575-A // Selective signaling system // Neiswinter James T. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.12 MB | Shaun Ewing | Nov 16, 1943 00:00 | US-2334575-A // Selective signaling system // Neiswinter James T. // American Telephone & Telegraph | ||||
| PDF File 2401494.pdf | 1.12 MB | Shaun Ewing | Jun 04, 1946 00:00 |
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US-2401494-A // Secret signaling system // Martin Wade B. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.12 MB | Shaun Ewing | Jun 04, 1946 00:00 | US-2401494-A // Secret signaling system // Martin Wade B. // American Telephone & Telegraph | ||||
| PDF File 2315413.pdf | 1.11 MB | Shaun Ewing | Mar 30, 1943 00:00 |
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US-2315413-A // Teletypewriter selection system // Gammell Ernest Osmond // American Telephone & Telegraph | |||
| Version 1 (current) | 1.11 MB | Shaun Ewing | Mar 30, 1943 00:00 | US-2315413-A // Teletypewriter selection system // Gammell Ernest Osmond // American Telephone & Telegraph | ||||
| PDF File 2418406.pdf | 1.11 MB | Shaun Ewing | Apr 01, 1947 00:00 |
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US-2418406-A // Selective signaling system // Hanley Frank Harold // American Telephone & Telegraph | |||
| Version 1 (current) | 1.11 MB | Shaun Ewing | Apr 01, 1947 00:00 | US-2418406-A // Selective signaling system // Hanley Frank Harold // American Telephone & Telegraph | ||||
| PDF File 4027104.pdf | 1.08 MB | Shaun Ewing | May 31, 1977 00:00 |
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US-4027104-A // Arrangement for automatically generating alternate telephone station identification codes // Levitt; Arthur Paul ; Oakley; Robert Vincent ; Patterson; Roy Earl // American Telephone And Telegraph Company | |||
| Version 1 (current) | 1.08 MB | Shaun Ewing | May 31, 1977 00:00 | US-4027104-A // Arrangement for automatically generating alternate telephone station identification codes // Levitt; Arthur Paul ; Oakley; Robert Vincent ; Patterson; Roy Earl // American Telephone And Telegraph Company | ||||
| PDF File 3156772.pdf | 1.07 MB | Shaun Ewing | Nov 10, 1964 00:00 |
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US-3156772-A // Telephone message unit recording system // Freericks Lambert ; Kukasch Herbert L. ; Luzon Thomas B. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.07 MB | Shaun Ewing | Nov 10, 1964 00:00 | US-3156772-A // Telephone message unit recording system // Freericks Lambert ; Kukasch Herbert L. ; Luzon Thomas B. // American Telephone & Telegraph |
