Name Size Creator Creation Date Labels Comment  
PDF File 2315439.pdf 450 kB Shaun Ewing Mar 30, 1943 00:00
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US-2315439-A // Teletypewriter system // Maxwell John L. ; Shimmin Elmer Richard // American Telephone & Telegraph
PDF File 2334551.pdf 447 kB Shaun Ewing Nov 16, 1943 00:00
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US-2334551-A // Telegraph system // Hanley Frank Harold // American Telephone & Telegraph
PDF File 2248096.pdf 445 kB Shaun Ewing Jul 08, 1941 00:00
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US-2248096-A // Testing circuit // Lane Leland Gifford // American Telephone & Telegraph
PDF File 2958832.pdf 443 kB Shaun Ewing Nov 01, 1960 00:00
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US-2958832-A // Differential-phase corrector // Clark Jean H. // American Telephone & Telegraph
PDF File 3181062.pdf 440 kB Shaun Ewing Apr 27, 1965 00:00
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US-3181062-A // Two-wire test clip with integral capacitive probe // Scarlett Reece M. // American Telephone & Telegraph
PDF File 2346115.pdf 436 kB Shaun Ewing Apr 04, 1944 00:00
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US-2346115-A // Emergency telephone system // Rhoads Charles Stanley // American Telephone & Telegraph
PDF File 3283083.pdf 433 kB Shaun Ewing Nov 01, 1966 00:00
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US-3283083-A // Telephone subscriber's line circuit // Macleod Donald A. // American Telephone & Telegraph
PDF File 2677011.pdf 432 kB Shaun Ewing Apr 27, 1954 00:00
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US-2677011-A // Teletypewriter message identification system // Burwell Gordon E. // American Telephone & Telegraph
PDF File 2300050.pdf 426 kB Shaun Ewing Oct 27, 1942 00:00
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US-2300050-A // Teletypewriter control system // Leonard James Mortimer ; Borgeson Carl Anders // American Telephone & Telegraph
PDF File 2722682.pdf 426 kB Shaun Ewing Nov 01, 1955 00:00
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US-2722682-A // Two-way single sideband radio system // Neiswinter James T. // American Telephone & Telegraph
PDF File 2367054.pdf 424 kB Shaun Ewing Jan 09, 1945 00:00
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US-2367054-A // Signaling system // Rhoads Charles S. // American Telephone & Telegraph
PDF File 2368264.pdf 424 kB Shaun Ewing Jan 30, 1945 00:00
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US-2368264-A // Battery charging system // Scott Walter Franklyn ; Peters James Stewart // American Telephone & Telegraph
PDF File 2481112.pdf 417 kB Shaun Ewing Sept 06, 1949 00:00
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US-2481112-A // Teletypewriter permutation code signal combination counter // Hanley Frank Harold // American Telephone & Telegraph
PDF File 3342928.pdf 406 kB Shaun Ewing Sept 19, 1967 00:00
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US-3342928-A // Splice closures // Forney James M. // American Telephone & Telegraph
PDF File 2978542.pdf 406 kB Shaun Ewing Apr 04, 1961 00:00
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US-2978542-A // Impedance-matching network // Huxtable Ruth L. // American Telephone & Telegraph
PDF File 3288943.pdf 403 kB Shaun Ewing Nov 29, 1966 00:00
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US-3288943-A // Apparatus to visually identify conductor pairs in a multipair cable // Bohnenblust Clarence E. // American Telephone & Telegraph
PDF File 2269361.pdf 402 kB Shaun Ewing Jan 06, 1942 00:00
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US-2269361-A // Code calling system // Dewire Donald Stevens // American Telephone & Telegraph
PDF File 2958831.pdf 402 kB Shaun Ewing Nov 01, 1960 00:00
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US-2958831-A // Equalizer // Clark Jean H. // American Telephone & Telegraph
PDF File 2346113.pdf 399 kB Shaun Ewing Apr 04, 1944 00:00
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US-2346113-A // Auxiliary telephone apparatus // Rhoads Charles Stanley // American Telephone & Telegraph
PDF File 2383794.pdf 398 kB Shaun Ewing Aug 28, 1945 00:00
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US-2383794-A // Telephone system // Hayes Earl Joseph // American Telephone & Telegraph
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