Name Size Creator Creation Date Labels Comment  
PDF File 2460075.pdf 377 kB Shaun Ewing Jan 25, 1949 00:00
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US-2460075-A // Transmission control system // Dickieson Alton C. // Bell Telephone Labor Inc
PDF File 2460064.pdf 1.55 MB Shaun Ewing Jan 25, 1949 00:00
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US-2460064-A // Motor control circuit // Curtis Austen M. // Bell Telephone Labor Inc
PDF File 2459904.pdf 2.40 MB Shaun Ewing Jan 25, 1949 00:00
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US-2459904-A // Telegraph signal code translator // Watson Edward F. // Bell Telephone Labor Inc
PDF File 2459869.pdf 1.82 MB Shaun Ewing Jan 25, 1949 00:00
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US-2459869-A // Crystal growing apparatus // Christensen Carl J. ; Walker Albert C. // Bell Telephone Labor Inc
PDF File 2459867.pdf 1.52 MB Shaun Ewing Jan 25, 1949 00:00
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US-2459867-A // Gunnery training device // Buchanan Russell B. // Bell Telephone Labor Inc
PDF File 2459306.pdf 760 kB Shaun Ewing Jan 18, 1949 00:00
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US-2459306-A // Contact protection for mercury wetted switch contacts // Burton Everett T. // Bell Telephone Labor Inc
PDF File 2459117.pdf 1.49 MB Shaun Ewing Jan 11, 1949 00:00
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US-2459117-A // Object locating system // Oliver Bernard M. // Bell Telephone Labor Inc
PDF File 2459046.pdf 456 kB Shaun Ewing Jan 11, 1949 00:00
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US-2459046-A // Negative feedback amplifier // Rieke John W. // Bell Telephone Labor Inc
PDF File 2459030.pdf 615 kB Shaun Ewing Jan 11, 1949 00:00
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US-2459030-A // Tunable magnetron // Jonas Herbert C. ; Laico Joseph P. ; Ronci Victor L. // Bell Telephone Labor Inc
PDF File 2459019.pdf 167 kB Shaun Ewing Jan 11, 1949 00:00
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US-2459019-A // Piezoelectric crystal filter // D'Heedene Albert R. // Bell Telephone Labor Inc
PDF File 2459018.pdf 597 kB Shaun Ewing Jan 11, 1949 00:00
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US-2459018-A // Method of coating electrical devices // Monte Robert W. De ; Haines Atwell B. // Bell Telephone Labor Inc
PDF File 2458885.pdf 1.68 MB Shaun Ewing Jan 11, 1949 00:00
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US-2458885-A // Directive antenna system // Warren Clifford A. // Bell Telephone Labor Inc
PDF File 2458665.pdf 1.86 MB Shaun Ewing Jan 11, 1949 00:00
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US-2458665-A // Method of and apparatus for measuring pressure // Willard Gerald W. // Bell Telephone Labor Inc
PDF File 2458654.pdf 1.16 MB Shaun Ewing Jan 11, 1949 00:00
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US-2458654-A // System for and method of utilizing microwave radiation from the sun // Southworth George C. // Bell Telephone Labor Inc
PDF File 2458652.pdf 1.46 MB Shaun Ewing Jan 11, 1949 00:00
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US-2458652-A // Electron discharge apparatus // Sears Raymond W. // Bell Telephone Labor Inc
PDF File 2458615.pdf 1.41 MB Shaun Ewing Jan 11, 1949 00:00
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US-2458615-A // Piezoelectric crystal apparatus // Mason Warren P. // Bell Telephone Labor Inc
PDF File 2458601.pdf 1.79 MB Shaun Ewing Jan 11, 1949 00:00
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US-2458601-A // Method of and apparatus for measuring pressure // Johnson John B. // Bell Telephone Labor Inc
PDF File 2458599.pdf 892 kB Shaun Ewing Jan 11, 1949 00:00
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US-2458599-A // Circuit for sampling balanced signals // Hussey Luther W. // Bell Telephone Labor Inc
PDF File 2458586.pdf 422 kB Shaun Ewing Jan 11, 1949 00:00
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US-2458586-A // Self-synchronous system // Giroud Henry A. // Bell Telephone Labor Inc
PDF File 2458579.pdf 990 kB Shaun Ewing Jan 11, 1949 00:00
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US-2458579-A // Microwave modulator // Feldman Carl B. H. // Bell Telephone Labor Inc
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