Name Size Creator Creation Date Labels Comment  
PDF File 2452652.pdf 816 kB Shaun Ewing Nov 02, 1948 00:00
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US-2452652-A // Glass sealing method and machine // Hansen Rolf K. // Bell Telephone Labor Inc
PDF File 2452568.pdf 526 kB Shaun Ewing Nov 02, 1948 00:00
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US-2452568-A // Switching device // Harrison Henry C. // Bell Telephone Labor Inc
PDF File 2452157.pdf 801 kB Shaun Ewing Oct 26, 1948 00:00
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US-2452157-A // Electron discharge apparatus // Sears Raymond W. // Bell Telephone Labor Inc
PDF File 2452114.pdf 335 kB Shaun Ewing Oct 26, 1948 00:00
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US-2452114-A // Balanced wave filter // Farkas Francis S. // Bell Telephone Labor Inc
PDF File 2452079.pdf 347 kB Shaun Ewing Oct 26, 1948 00:00
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US-2452079-A // Relay // Stacy Leland J. // Bell Telephone Labor Inc
PDF File 2452052.pdf 1.29 MB Shaun Ewing Oct 26, 1948 00:00
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US-2452052-A // Selectively responsive device // Hibbard Frank H. // Bell Telephone Labor Inc
PDF File 2452051.pdf 802 kB Shaun Ewing Oct 26, 1948 00:00
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US-2452051-A // Relay system // Hersey Ralph E. // Bell Telephone Labor Inc
PDF File 2451632.pdf 1.70 MB Shaun Ewing Oct 19, 1948 00:00
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US-2451632-A // Control voltage means in pulse receiver // Oliver Bernard M. // Bell Telephone Labor Inc
PDF File 2451609.pdf 843 kB Shaun Ewing Oct 19, 1948 00:00
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US-2451609-A // Arresting hook device for grounded aircraft pilot trainers // Buchanan Russell B. // Bell Telephone Labor Inc
PDF File 2451572.pdf 1012 kB Shaun Ewing Oct 19, 1948 00:00
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US-2451572-A // Radiant energy measuring apparatus // Moore Hilbert R. // Bell Telephone Labor Inc
PDF File 2451556.pdf 484 kB Shaun Ewing Oct 19, 1948 00:00
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US-2451556-A // Electrode structure for gaseous discharge devices // Holdaway Vivian L. // Bell Telephone Labor Inc
PDF File 2451489.pdf 547 kB Shaun Ewing Oct 19, 1948 00:00
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US-2451489-A // Progressive selecting circuit // Jr. Amos E. Joel, // Bell Telephone Labor Inc
PDF File 2451484.pdf 1.23 MB Shaun Ewing Oct 19, 1948 00:00
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US-2451484-A // Cathode-ray signal utilizing means // Gould King E. ; Mertz Pierre // Bell Telephone Labor Inc
PDF File 2451480.pdf 342 kB Shaun Ewing Oct 19, 1948 00:00
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US-2451480-A // Subharmonic generator // Edson James O. ; Terry Donald M. // Bell Telephone Labor Inc
PDF File 2451465.pdf 1.32 MB Shaun Ewing Oct 19, 1948 00:00
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US-2451465-A // Transversal filter // Barney Harold L. // Bell Telephone Labor Inc
PDF File 2451416.pdf 775 kB Shaun Ewing Oct 12, 1948 00:00
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US-2451416-A // Intermittent drive device // Thomas Frank M. // Bell Telephone Labor Inc
PDF File 2451413.pdf 576 kB Shaun Ewing Oct 12, 1948 00:00
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US-2451413-A // Coupling device for concentric conductor lines // Robinson Albert L. // Bell Telephone Labor Inc
PDF File 2451044.pdf 1.46 MB Shaun Ewing Oct 12, 1948 00:00
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US-2451044-A // Communication system employing pulse code modulation // Pierce John R. // Bell Telephone Labor Inc
PDF File 2450997.pdf 521 kB Shaun Ewing Oct 12, 1948 00:00
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US-2450997-A // Signaling system // Shann Oscar A. // Bell Telephone Labor Inc
PDF File 2450974.pdf 966 kB Shaun Ewing Oct 12, 1948 00:00
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US-2450974-A // Method of making multiple cables for terminal banks // Mallina Rudolph F. // Bell Telephone Labor Inc
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