Name Size Creator Creation Date Labels Comment  
PDF File 2351551.pdf 2.83 MB Shaun Ewing Jun 13, 1944 00:00
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US-2351551-A // Telephone system // Seibel Charles F. // Bell Telephone Labor Inc
PDF File 2351730.pdf 364 kB Shaun Ewing Jun 20, 1944 00:00
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US-2351730-A // Relay // Zupa Frank A. // Bell Telephone Labor Inc
PDF File 2351757.pdf 731 kB Shaun Ewing Jun 20, 1944 00:00
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US-2351757-A // Electron discharge device // Gray Frank // Bell Telephone Labor Inc
PDF File 2351766.pdf 1.68 MB Shaun Ewing Jun 20, 1944 00:00
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US-2351766-A // Telephone system // Jr. Amos E. Joel, // Bell Telephone Labor Inc
PDF File 2351913.pdf 322 kB Shaun Ewing Jun 20, 1944 00:00
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US-2351913-A // Acoustic delay device // Bostwick Lee G. ; King John H. // Bell Telephone Labor Inc
PDF File 2351967.pdf 698 kB Shaun Ewing Jun 20, 1944 00:00
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US-2351967-A // Selector switch // Holden William H. T. // Bell Telephone Labor Inc
PDF File 2352056.pdf 399 kB Shaun Ewing Jun 20, 1944 00:00
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US-2352056-A // Thermally controlled resistor // Wilson Leon T. // Bell Telephone Labor Inc
PDF File 2352072.pdf 1.04 MB Shaun Ewing Jun 20, 1944 00:00
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US-2352072-A // Conoscope // Bond Walter L. // Bell Telephone Labor Inc
PDF File 2352081.pdf 747 kB Shaun Ewing Jun 20, 1944 00:00
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US-2352081-A // Transmission control in two-way signal transmission systems // Davis Kingsbury H. // Bell Telephone Labor Inc
PDF File 2352137.pdf 450 kB Shaun Ewing Jun 20, 1944 00:00
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US-2352137-A // Electron emitting element // Thurber Elmer A. // Bell Telephone Labor Inc
PDF File 2352142.pdf 1.16 MB Shaun Ewing Jun 20, 1944 00:00
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US-2352142-A // Signaling system // Vaughan Henry E. // Bell Telephone Labor Inc
PDF File 2352158.pdf 2.12 MB Shaun Ewing Jun 27, 1944 00:00
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US-2352158-A // Deep-sea apparatus housing // Bishop Walter M. // Bell Telephone Labor Inc
PDF File 2352254.pdf 407 kB Shaun Ewing Jun 27, 1944 00:00
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US-2352254-A // Frequency modulated wave transmission // Curtis Harold E. // Bell Telephone Labor Inc
PDF File 2352271.pdf 1.55 MB Shaun Ewing Jun 27, 1944 00:00
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US-2352271-A // Teletypewriter pay station circuit // Lang Wilmarth Y. ; Singer Fred J. // Bell Telephone Labor Inc
PDF File 2352272.pdf 2.40 MB Shaun Ewing Jun 27, 1944 00:00
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US-2352272-A // Inverse neutral telegraph repeater concentration group cord and attendant's circuit // Large Wayne V. K. ; Lucek Charles W. ; Marshall Tola A. // Bell Telephone Labor Inc
PDF File 2352352.pdf 409 kB Shaun Ewing Jun 27, 1944 00:00
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US-2352352-A // Selector switch // Wagenseil William O. // Bell Telephone Labor Inc
PDF File 2352635.pdf 616 kB Shaun Ewing Jul 04, 1944 00:00
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US-2352635-A // Electron discharge device // Irwin John C. // Bell Telephone Labor Inc
PDF File 2352723.pdf 464 kB Shaun Ewing Jul 04, 1944 00:00
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US-2352723-A // Call transmitter // Mallina Rudolph F. // Bell Telephone Labor Inc
PDF File 2352724.pdf 366 kB Shaun Ewing Jul 04, 1944 00:00
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US-2352724-A // Call transmitter // Mallina Rudolph F. // Bell Telephone Labor Inc
PDF File 2352742.pdf 805 kB Shaun Ewing Jul 04, 1944 00:00
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US-2352742-A // Pulse register circuit // Soffel Robert O. // Bell Telephone Labor Inc
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