Name Size Creator Creation Date Labels Comment  
PDF File 2515061.pdf 504 kB Shaun Ewing Jul 11, 1950 00:00
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US-2515061-A // Radio-frequency filter // Smith Phillip H. // Bell Telephone Labor Inc
PDF File 2515057.pdf 755 kB Shaun Ewing Jul 11, 1950 00:00
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US-2515057-A // Electronic tracing system // Pierce John R. // Bell Telephone Labor Inc
PDF File 2515039.pdf 1.06 MB Shaun Ewing Jul 11, 1950 00:00
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US-2515039-A // Transverse wave transmission in liquids // Hartley Ralph V. L. // Bell Telephone Labor Inc
PDF File 2515031.pdf 741 kB Shaun Ewing Jul 11, 1950 00:00
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US-2515031-A // Microphone having controllable directional response pattern // Jr. Robert Black, // Bell Telephone Labor Inc
PDF File 2514679.pdf 1.20 MB Shaun Ewing Jul 11, 1950 00:00
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US-2514679-A // Wave transmission // Southworth George C. // Bell Telephone Labor Inc
PDF File 2514678.pdf 3.02 MB Shaun Ewing Jul 11, 1950 00:00
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US-2514678-A // Wave guide system // Southworth George C. // Bell Telephone Labor Inc
PDF File 2514677.pdf 1.40 MB Shaun Ewing Jul 11, 1950 00:00
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US-2514677-A // Radio distance measuring system with alarm device // Skellett Albert M. // Bell Telephone Labor Inc
PDF File 2514671.pdf 957 kB Shaun Ewing Jul 11, 1950 00:00
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US-2514671-A // Decoder for pulse code modulation // Rack Alois J. // Bell Telephone Labor Inc
PDF File 2514667.pdf 226 kB Shaun Ewing Jul 11, 1950 00:00
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US-2514667-A // Magnetic alloys // Nesbitt Ethan A. // Bell Telephone Labor Inc
PDF File 2514617.pdf 491 kB Shaun Ewing Jul 11, 1950 00:00
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US-2514617-A // Directive scanning antenna system // Albersheim Walter J. // Bell Telephone Labor Inc
PDF File 2514080.pdf 1.14 MB Shaun Ewing Jul 04, 1950 00:00
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US-2514080-A // Method of obtaining high velocity with crystals // Mason Warren P. // Bell Telephone Labor Inc
PDF File 2513371.pdf 1.13 MB Shaun Ewing Jul 04, 1950 00:00
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US-2513371-A // Thermally tunable cavity resonator electron discharge device // Shepherd William G. // Bell Telephone Labor Inc
PDF File 2513359.pdf 840 kB Shaun Ewing Jul 04, 1950 00:00
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US-2513359-A // Electron discharge device of the cavity resonator type // Pierce John R. // Bell Telephone Labor Inc
PDF File 2513296.pdf 734 kB Shaun Ewing Jul 04, 1950 00:00
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US-2513296-A // Electron discharge device, including tunable cavity resonator // Ekstrand Sture O. ; Walsh Edward J. // Bell Telephone Labor Inc
PDF File 2513277.pdf 882 kB Shaun Ewing Jul 04, 1950 00:00
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US-2513277-A // Electron discharge device, including a tunable cavity resonator // Best Fred H. // Bell Telephone Labor Inc
PDF File 2511645.pdf 445 kB Shaun Ewing Jun 13, 1950 00:00
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US-2511645-A // Broad band attenuator // Jr. John J. Mahoney, // Bell Telephone Labor Inc
PDF File 2511622.pdf 411 kB Shaun Ewing Jun 13, 1950 00:00
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US-2511622-A // Telephone substation apparatus // Curran Stanley T. ; Thayer Walter J. // Bell Telephone Labor Inc
PDF File 2511617.pdf 1.22 MB Shaun Ewing Jun 13, 1950 00:00
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US-2511617-A // Power line carrier frequency telephone system // Barstow John M. // Bell Telephone Laboroatories I
PDF File 2511616.pdf 1.18 MB Shaun Ewing Jun 13, 1950 00:00
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US-2511616-A // Power line carrier frequency telephone system // Barstow John M. ; Lang Albert G. // Bell Telephone Labor Inc
PDF File 2511615.pdf 1.36 MB Shaun Ewing Jun 13, 1950 00:00
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US-2511615-A // Power line carrier frequency telephone system // Barstow John M. ; Lang Albert G. // Bell Telephone Labor Inc
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