Name Size Creator Creation Date Labels Comment  
PDF File 2781846.pdf 1.38 MB Shaun Ewing Feb 19, 1957 00:00
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US-2781846-A // Punch selector // Madden James J. ; Sumner Eric E. // Bell Telephone Labor Inc
PDF File 2782313.pdf 1.10 MB Shaun Ewing Feb 19, 1957 00:00
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US-2782313-A // High precision frequency standards // Marrison Warren A. // Bell Telephone Labor Inc
PDF File 2782269.pdf 769 kB Shaun Ewing Feb 19, 1957 00:00
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US-2782269-A // Magnetic amplifier circuits // Grant Dwight W. // Bell Telephone Labor Inc
PDF File 2782314.pdf 648 kB Shaun Ewing Feb 19, 1957 00:00
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US-2782314-A // Frequency supply circuits for carrier systems // Miller Walter F. // Bell Telephone Labor Inc
PDF File 2782366.pdf 554 kB Shaun Ewing Feb 19, 1957 00:00
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US-2782366-A // Visual indicator of harmonic distortion // Wall Virgil W. // Bell Telephone Labor Inc
PDF File 2782259.pdf 420 kB Shaun Ewing Feb 19, 1957 00:00
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US-2782259-A // Calling subscriber identifier using transistor oscillator in subsets // Dimond Thomas L. // Bell Telephone Labor Inc
PDF File 2782341.pdf 318 kB Shaun Ewing Feb 19, 1957 00:00
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US-2782341-A // Coaxial noise diode // Gamble Gordon L. ; Jakus Lyle A. // Bell Telephone Labor Inc
PDF File 2781459.pdf 1.03 MB Shaun Ewing Feb 12, 1957 00:00
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US-2781459-A // Power control circuit // Jr. Charles E. Pollard, // Bell Telephone Labor Inc
PDF File 2780410.pdf 11.69 MB Shaun Ewing Feb 05, 1957 00:00
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US-2780410-A // Tape-to-card converter circuit // Breed Rolland N. ; Groth Willard B. ; Irwin Gordon C. ; Kille Lindley A. ; Riggs George // Bell Telephone Labor Inc
PDF File 2780765.pdf 572 kB Shaun Ewing Feb 05, 1957 00:00
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US-2780765-A // Solar energy converting apparatus // Chapin Daryl M. ; Fuller Calvin S. ; Pearson Gerald L. // Bell Telephone Labor Inc
PDF File 2779891.pdf 1.46 MB Shaun Ewing Jan 29, 1957 00:00
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US-2779891-A // High frequency amplifier // Morton Jack A. // Bell Telephone Labor Inc
PDF File 2779191.pdf 1.34 MB Shaun Ewing Jan 29, 1957 00:00
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US-2779191-A // Frequency discriminator employing multiply resonant piezoelectric vibrator // Willard Gerald W. // Bell Telephone Labor Inc
PDF File 2779822.pdf 1.33 MB Shaun Ewing Jan 29, 1957 00:00
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US-2779822-A // Communication switching system employing gas tubes // Ketchledge Raymond W. // Bell Telephone Labor Inc
PDF File 2779934.pdf 1.01 MB Shaun Ewing Jan 29, 1957 00:00
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US-2779934-A // Switching circuits // Minnick Robert C. // Bell Telephone Labor Inc
PDF File 2779539.pdf 886 kB Shaun Ewing Jan 29, 1957 00:00
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US-2779539-A // Multiple code wheel analogue-digital translator // Darlington Sidney // Bell Telephone Labor Inc
PDF File 2779925.pdf 655 kB Shaun Ewing Jan 29, 1957 00:00
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US-2779925-A // Composite coaxial resonator // Black Harold S. // Bell Telephone Labor Inc
PDF File 2779814.pdf 498 kB Shaun Ewing Jan 29, 1957 00:00
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US-2779814-A // Electrical conductors having transposed conducting elements // Doherty William H. // Bell Telephone Labor Inc
PDF File 2779819.pdf 393 kB Shaun Ewing Jan 29, 1957 00:00
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US-2779819-A // Light servo system for non-intermittent projector // Graham Robert E. ; Mattke Charles F. // Bell Telephone Labor Inc
PDF File 2778878.pdf 3.51 MB Shaun Ewing Jan 22, 1957 00:00
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US-2778878-A // Repetition telephone dialing by pulse code modulated carrier // Malthaner William A. ; Vaughan Henry E. // Bell Telephone Labor Inc
PDF File 2778978.pdf 1009 kB Shaun Ewing Jan 22, 1957 00:00
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US-2778978-A // Multivibrator load circuit // Drew Glen G. // Bell Telephone Labor Inc
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