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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1808867.pdf | 1.20 MB | Shaun Ewing | Jun 09, 1931 00:00 |
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US-1808867-A // Directional antenna array // Stone John Stone // American Telephone & Telegraph | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Jun 09, 1931 00:00 | US-1808867-A // Directional antenna array // Stone John Stone // American Telephone & Telegraph | ||||
| PDF File 1808868.pdf | 1.21 MB | Shaun Ewing | Jun 09, 1931 00:00 |
|
US-1808868-A // Directional antenna array // Stone John Stone // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Jun 09, 1931 00:00 | US-1808868-A // Directional antenna array // Stone John Stone // American Telephone & Telegraph | ||||
| PDF File 1808869.pdf | 1.18 MB | Shaun Ewing | Jun 09, 1931 00:00 |
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US-1808869-A // Directional antenna array // Stone John Stone // American Telephone & Telegraph | |||
| Version 1 (current) | 1.18 MB | Shaun Ewing | Jun 09, 1931 00:00 | US-1808869-A // Directional antenna array // Stone John Stone // American Telephone & Telegraph | ||||
| PDF File 1809925.pdf | 218 kB | Shaun Ewing | Jun 16, 1931 00:00 |
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US-1809925-A // Variable resistance device // Edwards William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 218 kB | Shaun Ewing | Jun 16, 1931 00:00 | US-1809925-A // Variable resistance device // Edwards William H. // American Telephone & Telegraph | ||||
| PDF File 1809945.pdf | 360 kB | Shaun Ewing | Jun 16, 1931 00:00 |
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US-1809945-A // Control arrangement for carrier apparatus // Rea Wilton T. // American Telephone & Telegraph | |||
| Version 1 (current) | 360 kB | Shaun Ewing | Jun 16, 1931 00:00 | US-1809945-A // Control arrangement for carrier apparatus // Rea Wilton T. // American Telephone & Telegraph | ||||
| PDF File 1809950.pdf | 366 kB | Shaun Ewing | Jun 16, 1931 00:00 |
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US-1809950-A // Carrier telegraph system // Thorp Vaughn P. // American Telephone & Telegraph | |||
| Version 1 (current) | 366 kB | Shaun Ewing | Jun 16, 1931 00:00 | US-1809950-A // Carrier telegraph system // Thorp Vaughn P. // American Telephone & Telegraph | ||||
| PDF File 1811023.pdf | 366 kB | Shaun Ewing | Jun 23, 1931 00:00 |
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US-1811023-A // Photo-electric cell // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 366 kB | Shaun Ewing | Jun 23, 1931 00:00 | US-1811023-A // Photo-electric cell // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1811024.pdf | 164 kB | Shaun Ewing | Jun 23, 1931 00:00 |
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US-1811024-A // Photo-electric tube // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 164 kB | Shaun Ewing | Jun 23, 1931 00:00 | US-1811024-A // Photo-electric tube // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1811025.pdf | 401 kB | Shaun Ewing | Jun 23, 1931 00:00 |
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US-1811025-A // Regulation of level in broadcast transmission // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 401 kB | Shaun Ewing | Jun 23, 1931 00:00 | US-1811025-A // Regulation of level in broadcast transmission // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1811905.pdf | 584 kB | Shaun Ewing | Jun 30, 1931 00:00 |
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US-1811905-A // Means to control cross talk // Affel Herman A. ; Carpe Allen // American Telephone & Telegraph | |||
| Version 1 (current) | 584 kB | Shaun Ewing | Jun 30, 1931 00:00 | US-1811905-A // Means to control cross talk // Affel Herman A. ; Carpe Allen // American Telephone & Telegraph | ||||
| PDF File 1811915.pdf | 592 kB | Shaun Ewing | Jun 30, 1931 00:00 |
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US-1811915-A // Means to control cross talk // Carpe Allen // American Telephone & Telegraph | |||
| Version 1 (current) | 592 kB | Shaun Ewing | Jun 30, 1931 00:00 | US-1811915-A // Means to control cross talk // Carpe Allen // American Telephone & Telegraph | ||||
| PDF File 1811954.pdf | 746 kB | Shaun Ewing | Jun 30, 1931 00:00 |
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US-1811954-A // Transmission volume control // Mitchell Doren ; Silent Harold C. // American Telephone & Telegraph | |||
| Version 1 (current) | 746 kB | Shaun Ewing | Jun 30, 1931 00:00 | US-1811954-A // Transmission volume control // Mitchell Doren ; Silent Harold C. // American Telephone & Telegraph | ||||
| PDF File 1811955.pdf | 578 kB | Shaun Ewing | Jun 30, 1931 00:00 |
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US-1811955-A // Transmission volume control // Mitchell Doren ; Silent Harold C. // American Telephone & Telegraph | |||
| Version 1 (current) | 578 kB | Shaun Ewing | Jun 30, 1931 00:00 | US-1811955-A // Transmission volume control // Mitchell Doren ; Silent Harold C. // American Telephone & Telegraph | ||||
| PDF File 1812961.pdf | 284 kB | Shaun Ewing | Jul 07, 1931 00:00 |
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US-1812961-A // Cable guide // Kent Robert J. // American Telephone & Telegraph | |||
| Version 1 (current) | 284 kB | Shaun Ewing | Jul 07, 1931 00:00 | US-1812961-A // Cable guide // Kent Robert J. // American Telephone & Telegraph | ||||
| PDF File 1812964.pdf | 256 kB | Shaun Ewing | Jul 07, 1931 00:00 |
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US-1812964-A // Calling dial // Labaugh James M. ; Miller Victor F. // American Telephone & Telegraph ; Bell Telephone Labor Inc | |||
| Version 1 (current) | 256 kB | Shaun Ewing | Jul 07, 1931 00:00 | US-1812964-A // Calling dial // Labaugh James M. ; Miller Victor F. // American Telephone & Telegraph ; Bell Telephone Labor Inc | ||||
| PDF File 1812977.pdf | 498 kB | Shaun Ewing | Jul 07, 1931 00:00 |
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US-1812977-A // Oscillation generator // Ohl Russell S. // American Telephone & Telegraph | |||
| Version 1 (current) | 498 kB | Shaun Ewing | Jul 07, 1931 00:00 | US-1812977-A // Oscillation generator // Ohl Russell S. // American Telephone & Telegraph | ||||
| PDF File 1814017.pdf | 284 kB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1814017-A // Means for controlling sensitivity of voice operated devices // Wright Sumner B. ; Mitchell Doren // American Telephone & Telegraph | |||
| Version 1 (current) | 284 kB | Shaun Ewing | Jul 14, 1931 00:00 | US-1814017-A // Means for controlling sensitivity of voice operated devices // Wright Sumner B. ; Mitchell Doren // American Telephone & Telegraph | ||||
| PDF File 1814018.pdf | 341 kB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1814018-A // Means for controlling sensitivity of voice operated devices // Wright Sumner B. ; Mitchell Doren // American Telephone & Telegraph | |||
| Version 1 (current) | 341 kB | Shaun Ewing | Jul 14, 1931 00:00 | US-1814018-A // Means for controlling sensitivity of voice operated devices // Wright Sumner B. ; Mitchell Doren // American Telephone & Telegraph | ||||
| PDF File 1814038.pdf | 465 kB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1814038-A // Echo suppressor // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 465 kB | Shaun Ewing | Jul 14, 1931 00:00 | US-1814038-A // Echo suppressor // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1814052.pdf | 451 kB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1814052-A // Echo suppressor // Mitchell Doren // American Telephone & Telegraph | |||
| Version 1 (current) | 451 kB | Shaun Ewing | Jul 14, 1931 00:00 | US-1814052-A // Echo suppressor // Mitchell Doren // American Telephone & Telegraph |
