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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2252679.pdf | 510 kB | Shaun Ewing | Aug 12, 1941 00:00 |
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US-2252679-A // Preventing singing in telephone repeaters // Hawkins Russell S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 510 kB | Shaun Ewing | Aug 12, 1941 00:00 | US-2252679-A // Preventing singing in telephone repeaters // Hawkins Russell S. // Bell Telephone Labor Inc | ||||
| PDF File 2252747.pdf | 631 kB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2252747-A // Neutralizing arrangement for telegraph circuits // Wilkerson Jefferson R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 631 kB | Shaun Ewing | Aug 19, 1941 00:00 | US-2252747-A // Neutralizing arrangement for telegraph circuits // Wilkerson Jefferson R. // Bell Telephone Labor Inc | ||||
| PDF File 2252766.pdf | 1014 kB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2252766-A // Signaling system // Holden William H. T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1014 kB | Shaun Ewing | Aug 19, 1941 00:00 | US-2252766-A // Signaling system // Holden William H. T. // Bell Telephone Labor Inc | ||||
| PDF File 2252870.pdf | 1.44 MB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2252870-A // Carrier frequency heterodyne oscillator // Slonczewski Thaddeus // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.44 MB | Shaun Ewing | Aug 19, 1941 00:00 | US-2252870-A // Carrier frequency heterodyne oscillator // Slonczewski Thaddeus // Bell Telephone Labor Inc | ||||
| PDF File 2252875.pdf | 641 kB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2252875-A // Call transmitter device // Wheeler Clyde H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 641 kB | Shaun Ewing | Aug 19, 1941 00:00 | US-2252875-A // Call transmitter device // Wheeler Clyde H. // Bell Telephone Labor Inc | ||||
| PDF File 2252899.pdf | 361 kB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2252899-A // Method of manufacturing contact springs // Reynolds John N. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 361 kB | Shaun Ewing | Aug 19, 1941 00:00 | US-2252899-A // Method of manufacturing contact springs // Reynolds John N. // Bell Telephone Labor Inc | ||||
| PDF File 2253079.pdf | 1.08 MB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2253079-A // Electrical transmission circuit // Macnair Walter A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.08 MB | Shaun Ewing | Aug 19, 1941 00:00 | US-2253079-A // Electrical transmission circuit // Macnair Walter A. // Bell Telephone Labor Inc | ||||
| PDF File 2253085.pdf | 314 kB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2253085-A // Machine tool // Morrell Millard E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 314 kB | Shaun Ewing | Aug 19, 1941 00:00 | US-2253085-A // Machine tool // Morrell Millard E. // Bell Telephone Labor Inc | ||||
| PDF File 2253135.pdf | 278 kB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2253135-A // Mercury switch // Pollard Charles E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 278 kB | Shaun Ewing | Aug 19, 1941 00:00 | US-2253135-A // Mercury switch // Pollard Charles E. // Bell Telephone Labor Inc | ||||
| PDF File 2253189.pdf | 696 kB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2253189-A // Transmission device // Mechling Eugene B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 696 kB | Shaun Ewing | Aug 19, 1941 00:00 | US-2253189-A // Transmission device // Mechling Eugene B. // Bell Telephone Labor Inc | ||||
| PDF File 2253314.pdf | 652 kB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2253314-A // Time delay relay // Aamodt Thoralf // Bell Telephone Labor Inc | |||
| Version 1 (current) | 652 kB | Shaun Ewing | Aug 19, 1941 00:00 | US-2253314-A // Time delay relay // Aamodt Thoralf // Bell Telephone Labor Inc | ||||
| PDF File 2253335.pdf | 981 kB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2253335-A // Circuit controlling device // Krantz Hubert K. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 981 kB | Shaun Ewing | Aug 19, 1941 00:00 | US-2253335-A // Circuit controlling device // Krantz Hubert K. // Bell Telephone Labor Inc | ||||
| PDF File 2253337.pdf | 272 kB | Shaun Ewing | Aug 19, 1941 00:00 |
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US-2253337-A // Diode-triode apparatus // Lacey Edward // Bell Telephone Labor Inc | |||
| Version 1 (current) | 272 kB | Shaun Ewing | Aug 19, 1941 00:00 | US-2253337-A // Diode-triode apparatus // Lacey Edward // Bell Telephone Labor Inc | ||||
| PDF File 2253503.pdf | 1.51 MB | Shaun Ewing | Aug 26, 1941 00:00 |
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US-2253503-A // Generation and transmission of high frequency oscillations // Bowen Arnold E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.51 MB | Shaun Ewing | Aug 26, 1941 00:00 | US-2253503-A // Generation and transmission of high frequency oscillations // Bowen Arnold E. // Bell Telephone Labor Inc | ||||
| PDF File 2253577.pdf | 425 kB | Shaun Ewing | Aug 26, 1941 00:00 |
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US-2253577-A // Resistance device // Pearson Gerald L. ; Jr. Joseph B. Stucky, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 425 kB | Shaun Ewing | Aug 26, 1941 00:00 | US-2253577-A // Resistance device // Pearson Gerald L. ; Jr. Joseph B. Stucky, // Bell Telephone Labor Inc | ||||
| PDF File 2253583.pdf | 412 kB | Shaun Ewing | Aug 26, 1941 00:00 |
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US-2253583-A // Ground potential compensator // Roberts Leland C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 412 kB | Shaun Ewing | Aug 26, 1941 00:00 | US-2253583-A // Ground potential compensator // Roberts Leland C. // Bell Telephone Labor Inc | ||||
| PDF File 2253621.pdf | 363 kB | Shaun Ewing | Aug 26, 1941 00:00 |
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US-2253621-A // Signaling system // Jr. Arthur W. Horton, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 363 kB | Shaun Ewing | Aug 26, 1941 00:00 | US-2253621-A // Signaling system // Jr. Arthur W. Horton, // Bell Telephone Labor Inc | ||||
| PDF File 2253650.pdf | 2.85 MB | Shaun Ewing | Aug 26, 1941 00:00 |
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US-2253650-A // Telephone call transmitter // Richard Charles D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.85 MB | Shaun Ewing | Aug 26, 1941 00:00 | US-2253650-A // Telephone call transmitter // Richard Charles D. // Bell Telephone Labor Inc | ||||
| PDF File 2253856.pdf | 584 kB | Shaun Ewing | Aug 26, 1941 00:00 |
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US-2253856-A // Relay // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 584 kB | Shaun Ewing | Aug 26, 1941 00:00 | US-2253856-A // Relay // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 2253863.pdf | 1.01 MB | Shaun Ewing | Aug 26, 1941 00:00 |
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US-2253863-A // Coin collector apparatus // Melick John M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | Aug 26, 1941 00:00 | US-2253863-A // Coin collector apparatus // Melick John M. // Bell Telephone Labor Inc |
