Name Size Creator Creation Date Labels Comment  
PDF File 3519757.pdf 1.72 MB Shaun Ewing Jul 07, 1970 00:00
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US-3519757-A // Electronic key telephone system // Harold P. Anderson ; Michael A. Flavin ; John P. Grandmaison ; George E. Saltus ; James L. Simon // Bell Telephone Labor Inc
PDF File 3309467.pdf 1.71 MB Shaun Ewing Mar 14, 1967 00:00
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US-3309467-A // Switching system with routing control // Gorgas John W. ; Masucci Eugene D. // Bell Telephone Labor Inc
PDF File 3320369.pdf 1.71 MB Shaun Ewing May 16, 1967 00:00
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US-3320369-A // Automatic code transmitter utilizing a code bearing medium having bits of information // Hershey Harold J. ; O'Connor Robert J. ; Warnock Merville L. // Bell Telephone Labor Inc
PDF File 3378650.pdf 1.71 MB Shaun Ewing Apr 16, 1968 00:00
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US-3378650-A // Communication system signaling and testing equipment // Jr. Leopold F. Goeller, // Bell Telephone Labor Inc
PDF File 3312942.pdf 1.70 MB Shaun Ewing Apr 04, 1967 00:00
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US-3312942-A // Magnetically controlled switching circuits // Ridinger Philip G. // Bell Telephone Labor Inc
PDF File 3266353.pdf 1.69 MB Shaun Ewing Aug 16, 1966 00:00
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US-3266353-A // Equipment for retrieving underwater cable // Gretter Ralph W. ; Jr. John W. Stoner, ; Voigt Gottfried O. // Bell Telephone Labor Inc
PDF File 3274345.pdf 1.68 MB Shaun Ewing Sept 20, 1966 00:00
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US-3274345-A // Call transmitter // Jr. James H. Ham, ; Hostetler Willard E. ; Ritchey James F. ; Tolman Warren R. // Western Electric Co ; Bell Telephone Labor Inc
PDF File 3268652.pdf 1.64 MB Shaun Ewing Aug 23, 1966 00:00
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US-3268652-A // Electrical circuit assemblies // Burns John A. ; Eftang George W. // Western Electric Co ; Bell Telephone Labor Inc
PDF File 3407397.pdf 1.63 MB Shaun Ewing Oct 22, 1968 00:00
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US-3407397-A // Ternary memory system employing magnetic wire memory elements // Snare Ronald C. // Bell Telephone Labor Inc
PDF File 3230457.pdf 1.62 MB Shaun Ewing Jan 18, 1966 00:00
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US-3230457-A // Digital demodulator for frequencyshift keyed signals // Soffel Robert O. // Bell Telephone Labor Inc
PDF File 3349250.pdf 1.61 MB Shaun Ewing Oct 24, 1967 00:00
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US-3349250-A // Magnetic control circuits // Newhall Edmunde E. // Bell Telephone Labor Inc
PDF File 3231870.pdf 1.60 MB Shaun Ewing Jan 25, 1966 00:00
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US-3231870-A // Memory array for telephone offices // Gitten Lawrence J. ; Newby Neal D. // Bell Telephone Labor Inc
PDF File 3336442.pdf 1.57 MB Shaun Ewing Aug 15, 1967 00:00
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US-3336442-A // Trunk switching circuitry // Casterline Russell C. ; Jr. Leopold F. Goeller, ; Nervik John M. // Bell Telephone Labor Inc
PDF File 3385933.pdf 1.57 MB Shaun Ewing May 28, 1968 00:00
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US-3385933-A // Annoyance call tracing arrangement recording called party identification and voice sample // Abert Charles ; Anderson Donald E. ; Zarouni Alfred // Bell Telephone Labor Inc
PDF File 3307149.pdf 1.56 MB Shaun Ewing Feb 28, 1967 00:00
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US-3307149-A // Control logic circuit for subscriber data set carrier signal threshold monitor // Doktor Theodore L. ; Parker George ; Zydney Herbert M. // Bell Telephone Labor Inc
PDF File 3357113.pdf 1.55 MB Shaun Ewing Dec 12, 1967 00:00
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US-3357113-A // Device for teaching computer operation and programming // Hagelbarger David W. // Bell Telephone Labor Inc
PDF File 3286039.pdf 1.54 MB Shaun Ewing Nov 15, 1966 00:00
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US-3286039-A // Call transmitter // Stokes Rembert R. // Bell Telephone Labor Inc
PDF File 3420955.pdf 1.54 MB Shaun Ewing Jan 07, 1969 00:00
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US-3420955-A // Automatic peak selector // A. Michael Noll // Bell Telephone Labor Inc
PDF File 3257513.pdf 1.53 MB Shaun Ewing Jun 21, 1966 00:00
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US-3257513-A // Communications switching network // Feiner Alexander // Bell Telephone Labor Inc
PDF File 3389227.pdf 1.53 MB Shaun Ewing Jun 18, 1968 00:00
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US-3389227-A // Switching system // Catterall John M. ; Masucci Eugene D. // Bell Telephone Labor Inc
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