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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| 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 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 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 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 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 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 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 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 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 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 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 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 1749044.pdf | 460 kB | Shaun Ewing | Mar 04, 1930 00:00 |
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US-1749044-A // Meter // Niles Eliot W. // American Telephone & Telegraph | |||
| Version 1 (current) | 460 kB | Shaun Ewing | Mar 04, 1930 00:00 | US-1749044-A // Meter // Niles Eliot W. // American Telephone & Telegraph | ||||
| PDF File 1749045.pdf | 515 kB | Shaun Ewing | Mar 04, 1930 00:00 |
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US-1749045-A // Signaling system // Nyquist Harry ; Pfleger Kenneth W. // American Telephone & Telegraph | |||
| Version 1 (current) | 515 kB | Shaun Ewing | Mar 04, 1930 00:00 | US-1749045-A // Signaling system // Nyquist Harry ; Pfleger Kenneth W. // American Telephone & Telegraph | ||||
| PDF File 1749048.pdf | 451 kB | Shaun Ewing | Mar 04, 1930 00:00 |
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US-1749048-A // Carrier-telegraph alarm system // Thorp Vaughn P. ; Rea Wilton T. // American Telephone & Telegraph | |||
| Version 1 (current) | 451 kB | Shaun Ewing | Mar 04, 1930 00:00 | US-1749048-A // Carrier-telegraph alarm system // Thorp Vaughn P. ; Rea Wilton T. // American Telephone & Telegraph | ||||
| PDF File 1749825.pdf | 281 kB | Shaun Ewing | Mar 11, 1930 00:00 |
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US-1749825-A // Telegraph system // Loye Donald P. // American Telephone & Telegraph | |||
| Version 1 (current) | 281 kB | Shaun Ewing | Mar 11, 1930 00:00 | US-1749825-A // Telegraph system // Loye Donald P. // American Telephone & Telegraph | ||||
| PDF File 1749838.pdf | 522 kB | Shaun Ewing | Mar 11, 1930 00:00 |
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US-1749838-A // Selective system // Niles Eliot W. // American Telephone & Telegraph | |||
| Version 1 (current) | 522 kB | Shaun Ewing | Mar 11, 1930 00:00 | US-1749838-A // Selective system // Niles Eliot W. // American Telephone & Telegraph | ||||
| PDF File 1749841.pdf | 320 kB | Shaun Ewing | Mar 11, 1930 00:00 |
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US-1749841-A // Voice-operated relay equipment // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 320 kB | Shaun Ewing | Mar 11, 1930 00:00 | US-1749841-A // Voice-operated relay equipment // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1749844.pdf | 252 kB | Shaun Ewing | Mar 11, 1930 00:00 |
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US-1749844-A // System for furnishing intermittent telegraph service // Roberts Leland C. // American Telephone & Telegraph | |||
| Version 1 (current) | 252 kB | Shaun Ewing | Mar 11, 1930 00:00 | US-1749844-A // System for furnishing intermittent telegraph service // Roberts Leland C. // American Telephone & Telegraph | ||||
| PDF File 1749851.pdf | 455 kB | Shaun Ewing | Mar 11, 1930 00:00 |
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US-1749851-A // Circuit controller // Silent Harold C. // American Telephone & Telegraph | |||
| Version 1 (current) | 455 kB | Shaun Ewing | Mar 11, 1930 00:00 | US-1749851-A // Circuit controller // Silent Harold C. // American Telephone & Telegraph |
