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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2544754.pdf | 629 kB | Shaun Ewing | Mar 13, 1951 00:00 |
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US-2544754-A // Electron camera tube // Townes Charles H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 629 kB | Shaun Ewing | Mar 13, 1951 00:00 | US-2544754-A // Electron camera tube // Townes Charles H. // Bell Telephone Labor Inc | ||||
| PDF File 2544753.pdf | 676 kB | Shaun Ewing | Mar 13, 1951 00:00 |
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US-2544753-A // Electron camera tube // Graham Robert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 676 kB | Shaun Ewing | Mar 13, 1951 00:00 | US-2544753-A // Electron camera tube // Graham Robert E. // Bell Telephone Labor Inc | ||||
| PDF File 2544330.pdf | 1.22 MB | Shaun Ewing | Mar 06, 1951 00:00 |
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US-2544330-A // Selective signaling device // Jr. Walter Koenig, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Mar 06, 1951 00:00 | US-2544330-A // Selective signaling device // Jr. Walter Koenig, // Bell Telephone Labor Inc | ||||
| PDF File 2544325.pdf | 608 kB | Shaun Ewing | Mar 06, 1951 00:00 |
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US-2544325-A // Telephone substation apparatus // Jr. Charles A. Johnson, ; Krumreich Charles L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 608 kB | Shaun Ewing | Mar 06, 1951 00:00 | US-2544325-A // Telephone substation apparatus // Jr. Charles A. Johnson, ; Krumreich Charles L. // Bell Telephone Labor Inc | ||||
| PDF File 2544313.pdf | 1.78 MB | Shaun Ewing | Mar 06, 1951 00:00 |
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US-2544313-A // Cable lashing machine // Harley Joseph J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.78 MB | Shaun Ewing | Mar 06, 1951 00:00 | US-2544313-A // Cable lashing machine // Harley Joseph J. // Bell Telephone Labor Inc | ||||
| PDF File 2543531.pdf | 754 kB | Shaun Ewing | Feb 27, 1951 00:00 |
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US-2543531-A // Counting apparatus // Lang Wilmarth Y. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 754 kB | Shaun Ewing | Feb 27, 1951 00:00 | US-2543531-A // Counting apparatus // Lang Wilmarth Y. // Bell Telephone Labor Inc | ||||
| PDF File 2543130.pdf | 1.16 MB | Shaun Ewing | Feb 27, 1951 00:00 |
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US-2543130-A // Reflecting system // Robertson Sloan D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.16 MB | Shaun Ewing | Feb 27, 1951 00:00 | US-2543130-A // Reflecting system // Robertson Sloan D. // Bell Telephone Labor Inc | ||||
| PDF File 2543116.pdf | 1.76 MB | Shaun Ewing | Feb 27, 1951 00:00 |
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US-2543116-A // Means and method for the secret transmission of message intelligence // Llewellyn Frederick B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.76 MB | Shaun Ewing | Feb 27, 1951 00:00 | US-2543116-A // Means and method for the secret transmission of message intelligence // Llewellyn Frederick B. // Bell Telephone Labor Inc | ||||
| PDF File 2543039.pdf | 1.77 MB | Shaun Ewing | Feb 27, 1951 00:00 |
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US-2543039-A // Bombardment induced conductivity in solid insulators // Mckay Kenneth G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.77 MB | Shaun Ewing | Feb 27, 1951 00:00 | US-2543039-A // Bombardment induced conductivity in solid insulators // Mckay Kenneth G. // Bell Telephone Labor Inc | ||||
| PDF File 2542844.pdf | 977 kB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542844-A // Microwave directive antenna // Smith Phillip H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 977 kB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542844-A // Microwave directive antenna // Smith Phillip H. // Bell Telephone Labor Inc | ||||
| PDF File 2542800.pdf | 2.28 MB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542800-A // Variable timed release for registers controlled by register group busy means // Dehn Joseph W. ; Hersey Ralph E. ; Mehring Arthur C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.28 MB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542800-A // Variable timed release for registers controlled by register group busy means // Dehn Joseph W. ; Hersey Ralph E. ; Mehring Arthur C. // Bell Telephone Labor Inc | ||||
| PDF File 2542794.pdf | 513 kB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542794-A // Control circuit for step-by-step switches // Brown Henry B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 513 kB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542794-A // Control circuit for step-by-step switches // Brown Henry B. // Bell Telephone Labor Inc | ||||
| PDF File 2542742.pdf | 652 kB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542742-A // Pilot lamp station line circuits // Welch Paul V. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 652 kB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542742-A // Pilot lamp station line circuits // Welch Paul V. // Bell Telephone Labor Inc | ||||
| PDF File 2542727.pdf | 452 kB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542727-A // Etching processes and solutions // Theuerer Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 452 kB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542727-A // Etching processes and solutions // Theuerer Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 2542672.pdf | 784 kB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542672-A // Coordinate selecting and lockout circuit // Hecht George // Bell Telephone Labor Inc | |||
| Version 1 (current) | 784 kB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542672-A // Coordinate selecting and lockout circuit // Hecht George // Bell Telephone Labor Inc | ||||
| PDF File 2542668.pdf | 909 kB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542668-A // Mercury type relay // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 909 kB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542668-A // Mercury type relay // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 2542644.pdf | 1007 kB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542644-A // Multistage ring circuit // Edson James O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1007 kB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542644-A // Multistage ring circuit // Edson James O. // Bell Telephone Labor Inc | ||||
| PDF File 2542208.pdf | 3.28 MB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542208-A // Telegraph concentration board circuits // Purvis Matthew R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.28 MB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542208-A // Telegraph concentration board circuits // Purvis Matthew R. // Bell Telephone Labor Inc | ||||
| PDF File 2542185.pdf | 322 kB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542185-A // Rotatable attenuator without phase shift // Fox Arthur Gardner // Bell Telephone Labor Inc | |||
| Version 1 (current) | 322 kB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542185-A // Rotatable attenuator without phase shift // Fox Arthur Gardner // Bell Telephone Labor Inc | ||||
| PDF File 2542183.pdf | 1.23 MB | Shaun Ewing | Feb 20, 1951 00:00 |
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US-2542183-A // Transmission privacy synchronizing and equalizing system // Edwards Paul G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.23 MB | Shaun Ewing | Feb 20, 1951 00:00 | US-2542183-A // Transmission privacy synchronizing and equalizing system // Edwards Paul G. // Bell Telephone Labor Inc |
