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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1749023.pdf | 395 kB | Shaun Ewing | Mar 04, 1930 00:00 |
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US-1749023-A // Meter // Edwards William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 395 kB | Shaun Ewing | Mar 04, 1930 00:00 | US-1749023-A // Meter // Edwards William H. // American Telephone & Telegraph | ||||
| PDF File 1749015.pdf | 398 kB | Shaun Ewing | Mar 04, 1930 00:00 |
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US-1749015-A // Meter // Bisbee Frederick C. // American Telephone & Telegraph | |||
| Version 1 (current) | 398 kB | Shaun Ewing | Mar 04, 1930 00:00 | US-1749015-A // Meter // Bisbee Frederick C. // American Telephone & Telegraph | ||||
| PDF File 1748192.pdf | 622 kB | Shaun Ewing | Feb 25, 1930 00:00 |
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US-1748192-A // Measurement of echoes // Satterthwaite Joshua P. ; Dingman James E. // American Telephone & Telegraph | |||
| Version 1 (current) | 622 kB | Shaun Ewing | Feb 25, 1930 00:00 | US-1748192-A // Measurement of echoes // Satterthwaite Joshua P. ; Dingman James E. // American Telephone & Telegraph | ||||
| PDF File 1748186.pdf | 1.16 MB | Shaun Ewing | Feb 25, 1930 00:00 |
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US-1748186-A // Signaling system // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 1.16 MB | Shaun Ewing | Feb 25, 1930 00:00 | US-1748186-A // Signaling system // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1748175.pdf | 249 kB | Shaun Ewing | Feb 25, 1930 00:00 |
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US-1748175-A // Thermionic vacuum tube // Holden William H. T. // American Telephone & Telegraph | |||
| Version 1 (current) | 249 kB | Shaun Ewing | Feb 25, 1930 00:00 | US-1748175-A // Thermionic vacuum tube // Holden William H. T. // American Telephone & Telegraph | ||||
| PDF File 1748171.pdf | 402 kB | Shaun Ewing | Feb 25, 1930 00:00 |
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US-1748171-A // Measurement of echoes // Clark Alva B. // American Telephone & Telegraph | |||
| Version 1 (current) | 402 kB | Shaun Ewing | Feb 25, 1930 00:00 | US-1748171-A // Measurement of echoes // Clark Alva B. // American Telephone & Telegraph | ||||
| PDF File 1748166.pdf | 714 kB | Shaun Ewing | Feb 25, 1930 00:00 |
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US-1748166-A // Telephone-exchange system // Bascom Henry M. ; Haines William T. // American Telephone & Telegraph | |||
| Version 1 (current) | 714 kB | Shaun Ewing | Feb 25, 1930 00:00 | US-1748166-A // Telephone-exchange system // Bascom Henry M. ; Haines William T. // American Telephone & Telegraph | ||||
| PDF File 1747236.pdf | 1.00 MB | Shaun Ewing | Feb 18, 1930 00:00 |
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US-1747236-A // Automatic selection of receiving channels // Gillett Glenn D. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.00 MB | Shaun Ewing | Feb 18, 1930 00:00 | US-1747236-A // Automatic selection of receiving channels // Gillett Glenn D. // American Telephone & Telegraph | ||||
| PDF File 1747221.pdf | 754 kB | Shaun Ewing | Feb 18, 1930 00:00 |
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US-1747221-A // Automatic selection of receiving channels // Bown Ralph // American Telephone & Telegraph | |||
| Version 1 (current) | 754 kB | Shaun Ewing | Feb 18, 1930 00:00 | US-1747221-A // Automatic selection of receiving channels // Bown Ralph // American Telephone & Telegraph | ||||
| PDF File 1747220.pdf | 518 kB | Shaun Ewing | Feb 18, 1930 00:00 |
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US-1747220-A // Automatic selection of receiving channels // Bown Ralph // American Telephone & Telegraph | |||
| Version 1 (current) | 518 kB | Shaun Ewing | Feb 18, 1930 00:00 | US-1747220-A // Automatic selection of receiving channels // Bown Ralph // American Telephone & Telegraph | ||||
| PDF File 1747218.pdf | 1.84 MB | Shaun Ewing | Feb 18, 1930 00:00 |
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US-1747218-A // Automatic selection of receiving channels // Bohn William C. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.84 MB | Shaun Ewing | Feb 18, 1930 00:00 | US-1747218-A // Automatic selection of receiving channels // Bohn William C. // American Telephone & Telegraph | ||||
| PDF File 1747160.pdf | 434 kB | Shaun Ewing | Feb 18, 1930 00:00 |
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US-1747160-A // Single-side band-carrier system // Carpe Allen // American Telephone & Telegraph | |||
| Version 1 (current) | 434 kB | Shaun Ewing | Feb 18, 1930 00:00 | US-1747160-A // Single-side band-carrier system // Carpe Allen // American Telephone & Telegraph | ||||
| PDF File 1746793.pdf | 2.62 MB | Shaun Ewing | Feb 11, 1930 00:00 |
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US-1746793-A // Trunking system // Rhodes William A. ; Dahl Jack F. // American Telephone & Telegraph ; Western Electric Co | |||
| Version 1 (current) | 2.62 MB | Shaun Ewing | Feb 11, 1930 00:00 | US-1746793-A // Trunking system // Rhodes William A. ; Dahl Jack F. // American Telephone & Telegraph ; Western Electric Co | ||||
| PDF File 1746314.pdf | 440 kB | Shaun Ewing | Feb 11, 1930 00:00 |
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US-1746314-A // Loading system for long submarine cables // Lewis Benjamin F. // American Telephone & Telegraph | |||
| Version 1 (current) | 440 kB | Shaun Ewing | Feb 11, 1930 00:00 | US-1746314-A // Loading system for long submarine cables // Lewis Benjamin F. // American Telephone & Telegraph | ||||
| PDF File 1746305.pdf | 495 kB | Shaun Ewing | Feb 11, 1930 00:00 |
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US-1746305-A // Radio signaling system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 495 kB | Shaun Ewing | Feb 11, 1930 00:00 | US-1746305-A // Radio signaling system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1746304.pdf | 1.05 MB | Shaun Ewing | Feb 11, 1930 00:00 |
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US-1746304-A // Method for measuring the end-section capacity of coil-loaded telephone circuits // Clark Alva B. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Feb 11, 1930 00:00 | US-1746304-A // Method for measuring the end-section capacity of coil-loaded telephone circuits // Clark Alva B. // American Telephone & Telegraph | ||||
| PDF File 1746241.pdf | 607 kB | Shaun Ewing | Feb 11, 1930 00:00 |
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US-1746241-A // Transmission-measuring system // Clark Alva B. ; Best Fred H. // American Telephone & Telegraph | |||
| Version 1 (current) | 607 kB | Shaun Ewing | Feb 11, 1930 00:00 | US-1746241-A // Transmission-measuring system // Clark Alva B. ; Best Fred H. // American Telephone & Telegraph | ||||
| PDF File 1746239.pdf | 330 kB | Shaun Ewing | Feb 11, 1930 00:00 |
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US-1746239-A // Transmission-measuring system // Best Fred H. // American Telephone & Telegraph | |||
| Version 1 (current) | 330 kB | Shaun Ewing | Feb 11, 1930 00:00 | US-1746239-A // Transmission-measuring system // Best Fred H. // American Telephone & Telegraph | ||||
| PDF File 1745457.pdf | 264 kB | Shaun Ewing | Feb 04, 1930 00:00 |
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US-1745457-A // Echo suppressor // Silent Harold C. // American Telephone & Telegraph | |||
| Version 1 (current) | 264 kB | Shaun Ewing | Feb 04, 1930 00:00 | US-1745457-A // Echo suppressor // Silent Harold C. // American Telephone & Telegraph | ||||
| PDF File 1745419.pdf | 231 kB | Shaun Ewing | Feb 04, 1930 00:00 |
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US-1745419-A // Apparatus for testing open-wire joints // Henneberger Thomas C. // American Telephone & Telegraph | |||
| Version 1 (current) | 231 kB | Shaun Ewing | Feb 04, 1930 00:00 | US-1745419-A // Apparatus for testing open-wire joints // Henneberger Thomas C. // American Telephone & Telegraph |
