Name Size Creator Creation Date Labels Comment  
PDF File 1850608.pdf 1.66 MB Shaun Ewing Mar 22, 1932 00:00
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US-1850608-A // Telephone system // Stokely Ray L. // Bell Telephone Labor Inc
PDF File 2222672.pdf 1.66 MB Shaun Ewing Nov 26, 1940 00:00
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US-2222672-A // Communication switching system // Large Wayne V. K. // Bell Telephone Labor Inc
PDF File 1810025.pdf 1.65 MB Shaun Ewing Jun 16, 1931 00:00
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US-1810025-A // Transmission system // Mathes Robert C. // Bell Telephone Labor Inc
PDF File 2024609.pdf 1.65 MB Shaun Ewing Dec 17, 1935 00:00
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US-2024609-A // Sound picture system // Smythe Edwin H. // Bell Telephone Labor Inc
PDF File 2015082.pdf 1.65 MB Shaun Ewing Sept 24, 1935 00:00
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US-2015082-A // Electric wave translating system // Meyers Stanley T. // Bell Telephone Labor Inc
PDF File 2158113.pdf 1.65 MB Shaun Ewing May 16, 1939 00:00
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US-2158113-A // Teletypewriter trunking system // Fitch Karl F. // Bell Telephone Labor Inc
PDF File 1963769.pdf 1.64 MB Shaun Ewing Jun 19, 1934 00:00
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US-1963769-A // Telephone system // Williford Oscar H. // Bell Telephone Labor Inc
PDF File 2173675.pdf 1.63 MB Shaun Ewing Sept 19, 1939 00:00
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US-2173675-A // Telephone system // Bowne Langford J. // Bell Telephone Labor Inc
PDF File 1859929.pdf 1.63 MB Shaun Ewing May 24, 1932 00:00
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US-1859929-A // Telephone system // Mckim James Burton // Bell Telephone Labor Inc
PDF File 2039001.pdf 1.63 MB Shaun Ewing Apr 28, 1936 00:00
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US-2039001-A // Testing system // Hurst George A. ; Retallack John B. // Bell Telephone Labor Inc
PDF File 1829783.pdf 1.63 MB Shaun Ewing Nov 03, 1931 00:00
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US-1829783-A // Method and system of secret signaling // Chesnut Roy W. ; Fisher Harold J. ; Sanial Arthur J. // Bell Telephone Labor Inc
PDF File 1953474.pdf 1.62 MB Shaun Ewing Apr 03, 1934 00:00
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US-1953474-A // Telephone exchange system // Fowler Clarence B. ; Gooderham John W. // Bell Telephone Labor Inc
PDF File 2065905.pdf 1.62 MB Shaun Ewing Dec 29, 1936 00:00
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US-2065905-A // Signaling system // Neely Thomas H. // Bell Telephone Labor Inc
PDF File 1917061.pdf 1.61 MB Shaun Ewing Jul 04, 1933 00:00
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US-1917061-A // Composite transmission system // Quarles Donald A. // Bell Telephone Labor Inc
PDF File 1849087.pdf 1.61 MB Shaun Ewing Mar 15, 1932 00:00
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US-1849087-A // Telephone system // Hovland Henry // Bell Telephone Labor Inc
PDF File 2042869.pdf 1.61 MB Shaun Ewing Jun 02, 1936 00:00
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US-2042869-A // Code calling system // Smith Percy C. // Bell Telephone Labor Inc
PDF File 2124596.pdf 1.60 MB Shaun Ewing Jul 26, 1938 00:00
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US-2124596-A // Piezoelectric crystal apparatus // Sykes Roger A. // Bell Telephone Labor Inc
PDF File 2044047.pdf 1.60 MB Shaun Ewing Jun 16, 1936 00:00
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US-2044047-A // Wave transmission network // Bobis Stephen // Bell Telephone Labor Inc
PDF File 1979273.pdf 1.60 MB Shaun Ewing Nov 06, 1934 00:00
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US-1979273-A // Telegraph exchange system // Lane Cuthbert C. ; Locke George A. // Bell Telephone Labsratories In
PDF File 2186130.pdf 1.59 MB Shaun Ewing Jan 09, 1940 00:00
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US-2186130-A // Detecting system // Wintringham William T. // Bell Telephone Labor Inc
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