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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1836549.pdf | 984 kB | Shaun Ewing | Dec 15, 1931 00:00 |
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US-1836549-A // Telephone exchange system // Paine Robert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 984 kB | Shaun Ewing | Dec 15, 1931 00:00 | US-1836549-A // Telephone exchange system // Paine Robert C. // Bell Telephone Labor Inc | ||||
| PDF File 1835802.pdf | 430 kB | Shaun Ewing | Dec 08, 1931 00:00 |
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US-1835802-A // Signaling system // Meszar John // Bell Telephone Labor Inc | |||
| Version 1 (current) | 430 kB | Shaun Ewing | Dec 08, 1931 00:00 | US-1835802-A // Signaling system // Meszar John // Bell Telephone Labor Inc | ||||
| PDF File 1835795.pdf | 600 kB | Shaun Ewing | Dec 08, 1931 00:00 |
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US-1835795-A // Sound transmission // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 600 kB | Shaun Ewing | Dec 08, 1931 00:00 | US-1835795-A // Sound transmission // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 1835792.pdf | 734 kB | Shaun Ewing | Dec 08, 1931 00:00 |
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US-1835792-A // Headset // Lum George R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 734 kB | Shaun Ewing | Dec 08, 1931 00:00 | US-1835792-A // Headset // Lum George R. // Bell Telephone Labor Inc | ||||
| PDF File 1835788.pdf | 359 kB | Shaun Ewing | Dec 08, 1931 00:00 |
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US-1835788-A // Electrical contact element // Knoop William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 359 kB | Shaun Ewing | Dec 08, 1931 00:00 | US-1835788-A // Electrical contact element // Knoop William A. // Bell Telephone Labor Inc | ||||
| PDF File 1835771.pdf | 352 kB | Shaun Ewing | Dec 08, 1931 00:00 |
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US-1835771-A // Submarine signaling cable // Gilbert John J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Dec 08, 1931 00:00 | US-1835771-A // Submarine signaling cable // Gilbert John J. // Bell Telephone Labor Inc | ||||
| PDF File 1835757.pdf | 500 kB | Shaun Ewing | Dec 08, 1931 00:00 |
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US-1835757-A // Connecting device // Burchett George W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 500 kB | Shaun Ewing | Dec 08, 1931 00:00 | US-1835757-A // Connecting device // Burchett George W. // Bell Telephone Labor Inc | ||||
| PDF File 1835743.pdf | 212 kB | Shaun Ewing | Dec 08, 1931 00:00 |
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US-1835743-A // Sound picture system // Aster Alvin K. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 212 kB | Shaun Ewing | Dec 08, 1931 00:00 | US-1835743-A // Sound picture system // Aster Alvin K. // Bell Telephone Labor Inc | ||||
| PDF File 1835737.pdf | 388 kB | Shaun Ewing | Dec 08, 1931 00:00 |
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US-1835737-A // Electrical recorder // Williams Samuel B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 388 kB | Shaun Ewing | Dec 08, 1931 00:00 | US-1835737-A // Electrical recorder // Williams Samuel B. // Bell Telephone Labor Inc | ||||
| PDF File 1834393.pdf | 522 kB | Shaun Ewing | Dec 01, 1931 00:00 |
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US-1834393-A // Telephone exchange system // Fowler Clarence B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 522 kB | Shaun Ewing | Dec 01, 1931 00:00 | US-1834393-A // Telephone exchange system // Fowler Clarence B. // Bell Telephone Labor Inc | ||||
| PDF File 1832901.pdf | 621 kB | Shaun Ewing | Nov 24, 1931 00:00 |
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US-1832901-A // Measurement of mechanical impedance // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 621 kB | Shaun Ewing | Nov 24, 1931 00:00 | US-1832901-A // Measurement of mechanical impedance // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 1832886.pdf | 688 kB | Shaun Ewing | Nov 24, 1931 00:00 |
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US-1832886-A // Current supply circuits // Whiting Donald F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 688 kB | Shaun Ewing | Nov 24, 1931 00:00 | US-1832886-A // Current supply circuits // Whiting Donald F. // Bell Telephone Labor Inc | ||||
| PDF File 1832466.pdf | 341 kB | Shaun Ewing | Nov 17, 1931 00:00 |
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US-1832466-A // Resistance unit // Means Winthrop J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 341 kB | Shaun Ewing | Nov 17, 1931 00:00 | US-1832466-A // Resistance unit // Means Winthrop J. // Bell Telephone Labor Inc | ||||
| PDF File 1832455.pdf | 389 kB | Shaun Ewing | Nov 17, 1931 00:00 |
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US-1832455-A // Submarine signaling conductor // Gilbert John J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 389 kB | Shaun Ewing | Nov 17, 1931 00:00 | US-1832455-A // Submarine signaling conductor // Gilbert John J. // Bell Telephone Labor Inc | ||||
| PDF File 1832453.pdf | 519 kB | Shaun Ewing | Nov 17, 1931 00:00 |
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US-1832453-A // Telephone metering system // Fowler Clarence B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 519 kB | Shaun Ewing | Nov 17, 1931 00:00 | US-1832453-A // Telephone metering system // Fowler Clarence B. // Bell Telephone Labor Inc | ||||
| PDF File 1832447.pdf | 2.59 MB | Shaun Ewing | Nov 17, 1931 00:00 |
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US-1832447-A // Telephone system // Carpenter Warren W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.59 MB | Shaun Ewing | Nov 17, 1931 00:00 | US-1832447-A // Telephone system // Carpenter Warren W. // Bell Telephone Labor Inc | ||||
| PDF File 1832431.pdf | 1.18 MB | Shaun Ewing | Nov 17, 1931 00:00 |
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US-1832431-A // Electric wave transmission system // Sivian Leon J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.18 MB | Shaun Ewing | Nov 17, 1931 00:00 | US-1832431-A // Electric wave transmission system // Sivian Leon J. // Bell Telephone Labor Inc | ||||
| PDF File 1832366.pdf | 1.91 MB | Shaun Ewing | Nov 17, 1931 00:00 |
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US-1832366-A // Electrical communication system // Dudley Homer W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.91 MB | Shaun Ewing | Nov 17, 1931 00:00 | US-1832366-A // Electrical communication system // Dudley Homer W. // Bell Telephone Labor Inc | ||||
| PDF File 1832309.pdf | 878 kB | Shaun Ewing | Nov 17, 1931 00:00 |
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US-1832309-A // Synchronous telegraph system // Knoop William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 878 kB | Shaun Ewing | Nov 17, 1931 00:00 | US-1832309-A // Synchronous telegraph system // Knoop William A. // Bell Telephone Labor Inc | ||||
| PDF File 1832308.pdf | 1.51 MB | Shaun Ewing | Nov 17, 1931 00:00 |
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US-1832308-A // Interpolating system // Knoop William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.51 MB | Shaun Ewing | Nov 17, 1931 00:00 | US-1832308-A // Interpolating system // Knoop William A. // Bell Telephone Labor Inc |
