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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1638437.pdf | 559 kB | Shaun Ewing | Aug 09, 1927 00:00 |
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US-1638437-A // Electrical network // Gannett Danforth K. ; Kirkwood Maclean // American Telephone And Telegrp | |||
| Version 1 (current) | 559 kB | Shaun Ewing | Aug 09, 1927 00:00 | US-1638437-A // Electrical network // Gannett Danforth K. ; Kirkwood Maclean // American Telephone And Telegrp | ||||
| PDF File 1638925.pdf | 604 kB | Shaun Ewing | Aug 16, 1927 00:00 |
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US-1638925-A // High-frequency signaling system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 604 kB | Shaun Ewing | Aug 16, 1927 00:00 | US-1638925-A // High-frequency signaling system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1638930.pdf | 228 kB | Shaun Ewing | Aug 16, 1927 00:00 |
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US-1638930-A // Voltage regulator for vacuum tubes // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 228 kB | Shaun Ewing | Aug 16, 1927 00:00 | US-1638930-A // Voltage regulator for vacuum tubes // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1638952.pdf | 676 kB | Shaun Ewing | Aug 16, 1927 00:00 |
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US-1638952-A // Means for regulating transmission circuits // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 676 kB | Shaun Ewing | Aug 16, 1927 00:00 | US-1638952-A // Means for regulating transmission circuits // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1639135.pdf | 1.20 MB | Shaun Ewing | Aug 16, 1927 00:00 |
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US-1639135-A // Telephone system // Johnson Herbert B. ; Eagon Lloyd La Fayette // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Aug 16, 1927 00:00 | US-1639135-A // Telephone system // Johnson Herbert B. ; Eagon Lloyd La Fayette // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 1639799.pdf | 531 kB | Shaun Ewing | Aug 23, 1927 00:00 |
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US-1639799-A // Automatic telephone system // Friend Otto A. ; Dustin George E. // American Telephone & Telegraph | |||
| Version 1 (current) | 531 kB | Shaun Ewing | Aug 23, 1927 00:00 | US-1639799-A // Automatic telephone system // Friend Otto A. ; Dustin George E. // American Telephone & Telegraph | ||||
| PDF File 1639819.pdf | 238 kB | Shaun Ewing | Aug 23, 1927 00:00 |
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US-1639819-A // Cleaning device for dials of telephone instruments // Thompson George K. // American Telephone & Telegraph | |||
| Version 1 (current) | 238 kB | Shaun Ewing | Aug 23, 1927 00:00 | US-1639819-A // Cleaning device for dials of telephone instruments // Thompson George K. // American Telephone & Telegraph | ||||
| PDF File 1640425.pdf | 415 kB | Shaun Ewing | Aug 30, 1927 00:00 |
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US-1640425-A // Measuring instrument // Percival Harry S. // American Telephone & Telegraph | |||
| Version 1 (current) | 415 kB | Shaun Ewing | Aug 30, 1927 00:00 | US-1640425-A // Measuring instrument // Percival Harry S. // American Telephone & Telegraph | ||||
| PDF File 1640435.pdf | 259 kB | Shaun Ewing | Aug 30, 1927 00:00 |
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US-1640435-A // Sighting instrument for measuring angles // Armstrong Frank C. // American Telephone & Telegraph | |||
| Version 1 (current) | 259 kB | Shaun Ewing | Aug 30, 1927 00:00 | US-1640435-A // Sighting instrument for measuring angles // Armstrong Frank C. // American Telephone & Telegraph | ||||
| PDF File 1641218.pdf | 1.80 MB | Shaun Ewing | Sept 06, 1927 00:00 |
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US-1641218-A // Straightforward trunking system // Bailey Rand S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.80 MB | Shaun Ewing | Sept 06, 1927 00:00 | US-1641218-A // Straightforward trunking system // Bailey Rand S. // American Telephone & Telegraph | ||||
| PDF File 1641289.pdf | 372 kB | Shaun Ewing | Sept 06, 1927 00:00 |
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US-1641289-A // Radio signaling system // Ohl Russell S. // American Telephone & Telegraph | |||
| Version 1 (current) | 372 kB | Shaun Ewing | Sept 06, 1927 00:00 | US-1641289-A // Radio signaling system // Ohl Russell S. // American Telephone & Telegraph | ||||
| PDF File 1641290.pdf | 948 kB | Shaun Ewing | Sept 06, 1927 00:00 |
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US-1641290-A // Printing-telegraph-exchange system // Perry Donald B. // American Telephone & Telegraph | |||
| Version 1 (current) | 948 kB | Shaun Ewing | Sept 06, 1927 00:00 | US-1641290-A // Printing-telegraph-exchange system // Perry Donald B. // American Telephone & Telegraph | ||||
| PDF File 1642025.pdf | 124 kB | Shaun Ewing | Sept 13, 1927 00:00 |
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US-1642025-A // Cross-arm // Hosford Roger F. // American Telephone & Telegraph | |||
| Version 1 (current) | 124 kB | Shaun Ewing | Sept 13, 1927 00:00 | US-1642025-A // Cross-arm // Hosford Roger F. // American Telephone & Telegraph | ||||
| PDF File 1642040.pdf | 204 kB | Shaun Ewing | Sept 13, 1927 00:00 |
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US-1642040-A // Public-address system // Mccutchen Brunson S. // American Telephone & Telegraph | |||
| Version 1 (current) | 204 kB | Shaun Ewing | Sept 13, 1927 00:00 | US-1642040-A // Public-address system // Mccutchen Brunson S. // American Telephone & Telegraph | ||||
| PDF File 1642048.pdf | 585 kB | Shaun Ewing | Sept 13, 1927 00:00 |
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US-1642048-A // Printing telegraph system // Vernam Gilbert S. ; Perry Donald B. // American Telephone & Telegraph | |||
| Version 1 (current) | 585 kB | Shaun Ewing | Sept 13, 1927 00:00 | US-1642048-A // Printing telegraph system // Vernam Gilbert S. ; Perry Donald B. // American Telephone & Telegraph | ||||
| PDF File 1642703.pdf | 445 kB | Shaun Ewing | Sept 20, 1927 00:00 |
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US-1642703-A // Carrier telegraph receiver // Thorp Vaughn P. // American Telephone & Telegraph | |||
| Version 1 (current) | 445 kB | Shaun Ewing | Sept 20, 1927 00:00 | US-1642703-A // Carrier telegraph receiver // Thorp Vaughn P. // American Telephone & Telegraph | ||||
| PDF File 1642710.pdf | 758 kB | Shaun Ewing | Sept 20, 1927 00:00 |
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US-1642710-A // Pilot-channel-indicating system // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 758 kB | Shaun Ewing | Sept 20, 1927 00:00 | US-1642710-A // Pilot-channel-indicating system // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1643323.pdf | 851 kB | Shaun Ewing | Sept 27, 1927 00:00 |
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US-1643323-A // Directive antenna array // Stone John Stone // American Telephone & Telegraph | |||
| Version 1 (current) | 851 kB | Shaun Ewing | Sept 27, 1927 00:00 | US-1643323-A // Directive antenna array // Stone John Stone // American Telephone & Telegraph | ||||
| PDF File 1643332.pdf | 391 kB | Shaun Ewing | Sept 27, 1927 00:00 |
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US-1643332-A // Electrical network // Campbell George A. // American Telephone & Telegraph | |||
| Version 1 (current) | 391 kB | Shaun Ewing | Sept 27, 1927 00:00 | US-1643332-A // Electrical network // Campbell George A. // American Telephone & Telegraph | ||||
| PDF File 1643350.pdf | 496 kB | Shaun Ewing | Sept 27, 1927 00:00 |
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US-1643350-A // Neutralization of inductive interference // Shetzline Roy A. // American Telephone & Telegraph | |||
| Version 1 (current) | 496 kB | Shaun Ewing | Sept 27, 1927 00:00 | US-1643350-A // Neutralization of inductive interference // Shetzline Roy A. // American Telephone & Telegraph |
