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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1792630.pdf | 537 kB | Shaun Ewing | Feb 17, 1931 00:00 |
|
US-1792630-A // Frequency-setting fork // Curtis Austen M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 537 kB | Shaun Ewing | Feb 17, 1931 00:00 | US-1792630-A // Frequency-setting fork // Curtis Austen M. // Bell Telephone Labor Inc | ||||
| PDF File 1792552.pdf | 236 kB | Shaun Ewing | Feb 17, 1931 00:00 |
|
US-1792552-A // Method of forming contacts // Siegmund Humphreys O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 236 kB | Shaun Ewing | Feb 17, 1931 00:00 | US-1792552-A // Method of forming contacts // Siegmund Humphreys O. // Bell Telephone Labor Inc | ||||
| PDF File 1792538.pdf | 1.02 MB | Shaun Ewing | Feb 17, 1931 00:00 |
|
US-1792538-A // Telephone system // Hersey Ralph E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.02 MB | Shaun Ewing | Feb 17, 1931 00:00 | US-1792538-A // Telephone system // Hersey Ralph E. // Bell Telephone Labor Inc | ||||
| PDF File 1792536.pdf | 843 kB | Shaun Ewing | Feb 17, 1931 00:00 |
|
US-1792536-A // Sound radiator // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 843 kB | Shaun Ewing | Feb 17, 1931 00:00 | US-1792536-A // Sound radiator // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 1792512.pdf | 459 kB | Shaun Ewing | Feb 17, 1931 00:00 |
|
US-1792512-A // Electromagnetic device // Siegmund Humphreys O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 459 kB | Shaun Ewing | Feb 17, 1931 00:00 | US-1792512-A // Electromagnetic device // Siegmund Humphreys O. // Bell Telephone Labor Inc | ||||
| PDF File 1792497.pdf | 411 kB | Shaun Ewing | Feb 17, 1931 00:00 |
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US-1792497-A // Vibration-damping device // Keller Arthur C. ; Norton Edward L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 411 kB | Shaun Ewing | Feb 17, 1931 00:00 | US-1792497-A // Vibration-damping device // Keller Arthur C. ; Norton Edward L. // Bell Telephone Labor Inc | ||||
| PDF File 1792496.pdf | 302 kB | Shaun Ewing | Feb 17, 1931 00:00 |
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US-1792496-A // Switching device // Hinshaw Foster A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 302 kB | Shaun Ewing | Feb 17, 1931 00:00 | US-1792496-A // Switching device // Hinshaw Foster A. // Bell Telephone Labor Inc | ||||
| PDF File 1792494.pdf | 145 kB | Shaun Ewing | Feb 17, 1931 00:00 |
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US-1792494-A // Phonographic needle // Harrison Henry C. ; Anderson Harvey A. // Bell Telephone Lab Incorproate | |||
| Version 1 (current) | 145 kB | Shaun Ewing | Feb 17, 1931 00:00 | US-1792494-A // Phonographic needle // Harrison Henry C. ; Anderson Harvey A. // Bell Telephone Lab Incorproate | ||||
| PDF File 1792483.pdf | 325 kB | Shaun Ewing | Feb 17, 1931 00:00 |
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US-1792483-A // Magnetic material // Elmen Gustaf W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 325 kB | Shaun Ewing | Feb 17, 1931 00:00 | US-1792483-A // Magnetic material // Elmen Gustaf W. // Bell Telephone Labor Inc | ||||
| PDF File 1792479.pdf | 235 kB | Shaun Ewing | Feb 17, 1931 00:00 |
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US-1792479-A // Alarm system // Bennett Arthur F. ; Mitchell Clifford E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 235 kB | Shaun Ewing | Feb 17, 1931 00:00 | US-1792479-A // Alarm system // Bennett Arthur F. ; Mitchell Clifford E. // Bell Telephone Labor Inc | ||||
| PDF File 1788747.pdf | 596 kB | Shaun Ewing | Jan 13, 1931 00:00 |
|
US-1788747-A // Telephone desk set // Scharringhausen William H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 596 kB | Shaun Ewing | Jan 13, 1931 00:00 | US-1788747-A // Telephone desk set // Scharringhausen William H. // Bell Telephone Labor Inc | ||||
| PDF File 1788736.pdf | 800 kB | Shaun Ewing | Jan 13, 1931 00:00 |
|
US-1788736-A // Echo-suppressing and energy-limiting circuits // O'Neill Henry W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 800 kB | Shaun Ewing | Jan 13, 1931 00:00 | US-1788736-A // Echo-suppressing and energy-limiting circuits // O'Neill Henry W. // Bell Telephone Labor Inc | ||||
| PDF File 1788734.pdf | 939 kB | Shaun Ewing | Jan 13, 1931 00:00 |
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US-1788734-A // Regulator system // Morton Edmund R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 939 kB | Shaun Ewing | Jan 13, 1931 00:00 | US-1788734-A // Regulator system // Morton Edmund R. // Bell Telephone Labor Inc | ||||
| PDF File 1788733.pdf | 777 kB | Shaun Ewing | Jan 13, 1931 00:00 |
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US-1788733-A // Regulator system // Morton Edmund R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 777 kB | Shaun Ewing | Jan 13, 1931 00:00 | US-1788733-A // Regulator system // Morton Edmund R. // Bell Telephone Labor Inc | ||||
| PDF File 1788720.pdf | 1.09 MB | Shaun Ewing | Jan 13, 1931 00:00 |
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US-1788720-A // Polyphase vacuum-tube oscillator // Jensen Axel G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.09 MB | Shaun Ewing | Jan 13, 1931 00:00 | US-1788720-A // Polyphase vacuum-tube oscillator // Jensen Axel G. // Bell Telephone Labor Inc | ||||
| PDF File 1788714.pdf | 743 kB | Shaun Ewing | Jan 13, 1931 00:00 |
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US-1788714-A // High and low frequency transmission circuits // Grimley Donald G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 743 kB | Shaun Ewing | Jan 13, 1931 00:00 | US-1788714-A // High and low frequency transmission circuits // Grimley Donald G. // Bell Telephone Labor Inc | ||||
| PDF File 1788704.pdf | 226 kB | Shaun Ewing | Jan 13, 1931 00:00 |
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US-1788704-A // Telephone system // Cesareo Orfeo // Bell Telephone Labor Inc | |||
| Version 1 (current) | 226 kB | Shaun Ewing | Jan 13, 1931 00:00 | US-1788704-A // Telephone system // Cesareo Orfeo // Bell Telephone Labor Inc | ||||
| PDF File 1788560.pdf | 1.05 MB | Shaun Ewing | Jan 13, 1931 00:00 |
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US-1788560-A // Wave generating and modulating system // Black Harold Stephen // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Jan 13, 1931 00:00 | US-1788560-A // Wave generating and modulating system // Black Harold Stephen // Bell Telephone Labor Inc | ||||
| PDF File 1788556.pdf | 633 kB | Shaun Ewing | Jan 13, 1931 00:00 |
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US-1788556-A // Ventilating device // Wood Ernest B. ; Eliason Oscar C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 633 kB | Shaun Ewing | Jan 13, 1931 00:00 | US-1788556-A // Ventilating device // Wood Ernest B. ; Eliason Oscar C. // Bell Telephone Labor Inc | ||||
| PDF File 1788538.pdf | 1.33 MB | Shaun Ewing | Jan 13, 1931 00:00 |
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US-1788538-A // Filtering circuits // Norton Edward L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.33 MB | Shaun Ewing | Jan 13, 1931 00:00 | US-1788538-A // Filtering circuits // Norton Edward L. // Bell Telephone Labor Inc |
