Name Size Creator Creation Date Labels Comment  
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 3322901.pdf 2.35 MB Shaun Ewing May 30, 1967 00:00
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US-3322901-A // Pbx dial conference trunk circuit // Trimmer Daniel R. // American Telephone & Telegraph
PDF File 3311709.pdf 1016 kB Shaun Ewing Mar 28, 1967 00:00
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US-3311709-A // Multidigit register circuit having random interrogating means // Bontempo Andrew // American Telephone & Telegraph
PDF File 3301968.pdf 850 kB Shaun Ewing Jan 31, 1967 00:00
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US-3301968-A // Telephone signaling device // Wurst Francis K. // American Telephone & Telegraph
PDF File 3301967.pdf 1.24 MB Shaun Ewing Jan 31, 1967 00:00
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US-3301967-A // Automatic call transmitter for repertory dialing using multifreqency pulses // Plyer Roger A. // American Telephone & Telegraph
PDF File 3293370.pdf 893 kB Shaun Ewing Dec 20, 1966 00:00
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US-3293370-A // Make busy line circuit for key telephone systems // Macleod Donald A. // American Telephone & Telegraph
PDF File 3288944.pdf 505 kB Shaun Ewing Nov 29, 1966 00:00
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US-3288944-A // Apparatus to audibly identify individual conductors in a multiconductor cable // Fleming Norman P. // 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 3287509.pdf 523 kB Shaun Ewing Nov 22, 1966 00:00
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US-3287509-A // Apparatus to visually identify cable pairs in a multipair cable by cable pair encoding means // Bohnenblust Clarence E. // 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 3275754.pdf 608 kB Shaun Ewing Sept 27, 1966 00:00
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US-3275754-A // Call distributing circuit // Howell Jesse O. ; Macleod Donald A. // American Telephone & Telegraph
PDF File 3266018.pdf 951 kB Shaun Ewing Aug 09, 1966 00:00
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US-3266018-A // Telemetering system for reading remotely loacted utility meters // Higgins Neil S. // American Telephone & Telegraph
PDF File 3252088.pdf 1.77 MB Shaun Ewing May 17, 1966 00:00
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US-3252088-A // Apparatus for identifying conductor pairs in a multipair telephone cable // Palmer J. F. Lewis // American Telephone & Telegraph
PDF File 3250859.pdf 11.90 MB Shaun Ewing May 10, 1966 00:00
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US-3250859-A // Universal line concentrator // Fisher Richard G. // American Telephone & Telegraph
PDF File 3246082.pdf 1.16 MB Shaun Ewing Apr 12, 1966 00:00
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US-3246082-A // Telephone hold program system // Levy Alfred // Levy Alfred
PDF File 3226088.pdf 528 kB Shaun Ewing Dec 28, 1965 00:00
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US-3226088-A // Apparatus for pulling cable through underground conduit // Habighorst Henry J. // American Telephone & Telegraph
PDF File 3214523.pdf 1.56 MB Shaun Ewing Oct 26, 1965 00:00
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US-3214523-A // Automatic telephone system with camp-on facilities // Hess Bobby L. // American Telephone & Telegraph
PDF File 3185773.pdf 3.95 MB Shaun Ewing May 25, 1965 00:00
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US-3185773-A // Switching system channel selection // Engeman John C. ; Jr. Leo Fring, ; Hartmann George J. // 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 3179931.pdf 1.99 MB Shaun Ewing Apr 20, 1965 00:00
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US-3179931-A // Alarm transfer system // Middaugh Jack K. // American Telephone & Telegraph
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