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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1744044.pdf | 320 kB | Shaun Ewing | Jan 21, 1930 00:00 |
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US-1744044-A // Single-side-band carrier system // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 320 kB | Shaun Ewing | Jan 21, 1930 00:00 | US-1744044-A // Single-side-band carrier system // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1744053.pdf | 666 kB | Shaun Ewing | Jan 21, 1930 00:00 |
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US-1744053-A // Signaling system // Miller Charles G. // American Telephone & Telegraph | |||
| Version 1 (current) | 666 kB | Shaun Ewing | Jan 21, 1930 00:00 | US-1744053-A // Signaling system // Miller Charles G. // American Telephone & Telegraph | ||||
| PDF File 1744058.pdf | 272 kB | Shaun Ewing | Jan 21, 1930 00:00 |
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US-1744058-A // Electrical protective system // Shetzline Roy A. // American Telephone & Telegraph | |||
| Version 1 (current) | 272 kB | Shaun Ewing | Jan 21, 1930 00:00 | US-1744058-A // Electrical protective system // Shetzline Roy A. // American Telephone & Telegraph | ||||
| PDF File 1744063.pdf | 642 kB | Shaun Ewing | Jan 21, 1930 00:00 |
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US-1744063-A // Bridge duplex telegraph system // Wilburn Sidney D. // American Telephone & Telegraph | |||
| Version 1 (current) | 642 kB | Shaun Ewing | Jan 21, 1930 00:00 | US-1744063-A // Bridge duplex telegraph system // Wilburn Sidney D. // American Telephone & Telegraph | ||||
| PDF File 1744835.pdf | 346 kB | Shaun Ewing | Jan 28, 1930 00:00 |
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US-1744835-A // Constant-frequency oscillator // Ohl Russell S. // American Telephone & Telegraph | |||
| Version 1 (current) | 346 kB | Shaun Ewing | Jan 28, 1930 00:00 | US-1744835-A // Constant-frequency oscillator // Ohl Russell S. // American Telephone & Telegraph | ||||
| PDF File 1744836.pdf | 499 kB | Shaun Ewing | Jan 28, 1930 00:00 |
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US-1744836-A // Carrier-amplitude control in radio systems // Ohl Russell S. // American Telephone & Telegraph | |||
| Version 1 (current) | 499 kB | Shaun Ewing | Jan 28, 1930 00:00 | US-1744836-A // Carrier-amplitude control in radio systems // Ohl Russell S. // American Telephone & Telegraph | ||||
| PDF File 1744840.pdf | 280 kB | Shaun Ewing | Jan 28, 1930 00:00 |
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US-1744840-A // Voltage-indicating and translating device // Strieby Maurice E. ; Fetter Charles H. // American Telephone & Telegraph | |||
| Version 1 (current) | 280 kB | Shaun Ewing | Jan 28, 1930 00:00 | US-1744840-A // Voltage-indicating and translating device // Strieby Maurice E. ; Fetter Charles H. // American Telephone & Telegraph | ||||
| PDF File 1744887.pdf | 189 kB | Shaun Ewing | Jan 28, 1930 00:00 |
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US-1744887-A // Device for introducing gas into cables // Gruene William J. // American Telephone & Telegraph | |||
| Version 1 (current) | 189 kB | Shaun Ewing | Jan 28, 1930 00:00 | US-1744887-A // Device for introducing gas into cables // Gruene William J. // American Telephone & Telegraph | ||||
| PDF File 1744918.pdf | 341 kB | Shaun Ewing | Jan 28, 1930 00:00 |
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US-1744918-A // Telephone system // Phelps Henry E. ; Jr. John Davidson, // American Telephone & Telegraph | |||
| Version 1 (current) | 341 kB | Shaun Ewing | Jan 28, 1930 00:00 | US-1744918-A // Telephone system // Phelps Henry E. ; Jr. John Davidson, // American Telephone & Telegraph | ||||
| PDF File 1745369.pdf | 239 kB | Shaun Ewing | Feb 04, 1930 00:00 |
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US-1745369-A // Unipotential-cathode vacuum tube // Holden William H. T. // American Telephone & Telegraph | |||
| Version 1 (current) | 239 kB | Shaun Ewing | Feb 04, 1930 00:00 | US-1745369-A // Unipotential-cathode vacuum tube // Holden William H. T. // American Telephone & Telegraph | ||||
| PDF File 1745376.pdf | 274 kB | Shaun Ewing | Feb 04, 1930 00:00 |
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US-1745376-A // Short-wave radioreceiver // Ohl Russell S. // American Telephone & Telegraph | |||
| Version 1 (current) | 274 kB | Shaun Ewing | Feb 04, 1930 00:00 | US-1745376-A // Short-wave radioreceiver // Ohl Russell S. // American Telephone & Telegraph | ||||
| PDF File 1745415.pdf | 492 kB | Shaun Ewing | Feb 04, 1930 00:00 |
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US-1745415-A // Carrier amplitude control system // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 492 kB | Shaun Ewing | Feb 04, 1930 00:00 | US-1745415-A // Carrier amplitude control system // Green Estill I. // 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 | ||||
| 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 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 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 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 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 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 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 |
