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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2223506.pdf | 714 kB | Shaun Ewing | Dec 03, 1940 00:00 |
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US-2223506-A // Wave amplification // Black Harold S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 714 kB | Shaun Ewing | Dec 03, 1940 00:00 | US-2223506-A // Wave amplification // Black Harold S. // Bell Telephone Labor Inc | ||||
| PDF File 2223521.pdf | 733 kB | Shaun Ewing | Dec 03, 1940 00:00 |
|
US-2223521-A // High-frequency system // Kirkpatrick William E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 733 kB | Shaun Ewing | Dec 03, 1940 00:00 | US-2223521-A // High-frequency system // Kirkpatrick William E. // Bell Telephone Labor Inc | ||||
| PDF File 2223537.pdf | 1.35 MB | Shaun Ewing | Dec 03, 1940 00:00 |
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US-2223537-A // Piezoelectric crystal apparatus // Sykes Roger A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.35 MB | Shaun Ewing | Dec 03, 1940 00:00 | US-2223537-A // Piezoelectric crystal apparatus // Sykes Roger A. // Bell Telephone Labor Inc | ||||
| PDF File 2223736.pdf | 478 kB | Shaun Ewing | Dec 03, 1940 00:00 |
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US-2223736-A // Transmission circuit // Mertz Pierre // Bell Telephone Labor Inc | |||
| Version 1 (current) | 478 kB | Shaun Ewing | Dec 03, 1940 00:00 | US-2223736-A // Transmission circuit // Mertz Pierre // Bell Telephone Labor Inc | ||||
| PDF File 2224183.pdf | 572 kB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224183-A // Telegraph transmitting system // Cummings George C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 572 kB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224183-A // Telegraph transmitting system // Cummings George C. // Bell Telephone Labor Inc | ||||
| PDF File 2224251.pdf | 7.67 MB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224251-A // Telephone system // Busch Aloysius J. ; Erwin Edson L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 7.67 MB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224251-A // Telephone system // Busch Aloysius J. ; Erwin Edson L. // Bell Telephone Labor Inc | ||||
| PDF File 2224569.pdf | 1.71 MB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224569-A // Control of transmission in two-way signaling systems // Dickleson Alton C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.71 MB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224569-A // Control of transmission in two-way signaling systems // Dickleson Alton C. // Bell Telephone Labor Inc | ||||
| PDF File 2224580.pdf | 364 kB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224580-A // Modulation system // Wise Raymond O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 364 kB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224580-A // Modulation system // Wise Raymond O. // Bell Telephone Labor Inc | ||||
| PDF File 2224673.pdf | 518 kB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224673-A // Amplifying system // Edson James O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 518 kB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224673-A // Amplifying system // Edson James O. // Bell Telephone Labor Inc | ||||
| PDF File 2224677.pdf | 508 kB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224677-A // Signaling system // Hanscom Clarence D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 508 kB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224677-A // Signaling system // Hanscom Clarence D. // Bell Telephone Labor Inc | ||||
| PDF File 2224696.pdf | 3.54 MB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224696-A // Telephone system // Raymond Ralph // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.54 MB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224696-A // Telephone system // Raymond Ralph // Bell Telephone Labor Inc | ||||
| PDF File 2225057.pdf | 417 kB | Shaun Ewing | Dec 17, 1940 00:00 |
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US-2225057-A // Light fixture for telephone booths // Kuntz Frank A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 417 kB | Shaun Ewing | Dec 17, 1940 00:00 | US-2225057-A // Light fixture for telephone booths // Kuntz Frank A. // Bell Telephone Labor Inc | ||||
| PDF File 2225305.pdf | 972 kB | Shaun Ewing | Dec 17, 1940 00:00 |
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US-2225305-A // Telephone system // King Gerald V. ; Swenson Paul W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 972 kB | Shaun Ewing | Dec 17, 1940 00:00 | US-2225305-A // Telephone system // King Gerald V. ; Swenson Paul W. // Bell Telephone Labor Inc | ||||
| PDF File 2225312.pdf | 450 kB | Shaun Ewing | Dec 17, 1940 00:00 |
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US-2225312-A // Acoustic device // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 450 kB | Shaun Ewing | Dec 17, 1940 00:00 | US-2225312-A // Acoustic device // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2225478.pdf | 990 kB | Shaun Ewing | Dec 17, 1940 00:00 |
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US-2225478-A // Telephone system // Hovland Henry // Bell Telephone Labor Inc | |||
| Version 1 (current) | 990 kB | Shaun Ewing | Dec 17, 1940 00:00 | US-2225478-A // Telephone system // Hovland Henry // Bell Telephone Labor Inc | ||||
| PDF File 2225488.pdf | 591 kB | Shaun Ewing | Dec 17, 1940 00:00 |
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US-2225488-A // Impulse translating apparatus // Stevens Ralph R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 591 kB | Shaun Ewing | Dec 17, 1940 00:00 | US-2225488-A // Impulse translating apparatus // Stevens Ralph R. // Bell Telephone Labor Inc | ||||
| PDF File 2225646.pdf | 572 kB | Shaun Ewing | Dec 24, 1940 00:00 |
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US-2225646-A // Selector switch brush // Lewis Benjamin F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 572 kB | Shaun Ewing | Dec 24, 1940 00:00 | US-2225646-A // Selector switch brush // Lewis Benjamin F. // Bell Telephone Labor Inc | ||||
| PDF File 2225648.pdf | 581 kB | Shaun Ewing | Dec 24, 1940 00:00 |
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US-2225648-A // Printing telegraph system // Locke George A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 581 kB | Shaun Ewing | Dec 24, 1940 00:00 | US-2225648-A // Printing telegraph system // Locke George A. // Bell Telephone Labor Inc | ||||
| PDF File 2225653.pdf | 661 kB | Shaun Ewing | Dec 24, 1940 00:00 |
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US-2225653-A // Compensation for variations in phase change // Monk Newton // Bell Telephone Labor Inc | |||
| Version 1 (current) | 661 kB | Shaun Ewing | Dec 24, 1940 00:00 | US-2225653-A // Compensation for variations in phase change // Monk Newton // Bell Telephone Labor Inc | ||||
| PDF File 2225688.pdf | 7.51 MB | Shaun Ewing | Dec 24, 1940 00:00 |
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US-2225688-A // Telephone testing circuit // Dehn Joseph W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 7.51 MB | Shaun Ewing | Dec 24, 1940 00:00 | US-2225688-A // Telephone testing circuit // Dehn Joseph W. // Bell Telephone Labor Inc |
