Name Size Creator Creation Date Labels Comment  
PDF File 2236012.pdf 912 kB Shaun Ewing Mar 25, 1941 00:00
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US-2236012-A // Electron discharge device // Shockley William // Bell Telephone Labor Inc
PDF File 2235910.pdf 951 kB Shaun Ewing Mar 25, 1941 00:00
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US-2235910-A // Telephone system // Welch Paul V. // Bell Telephone Labor Inc
PDF File 2235896.pdf 472 kB Shaun Ewing Mar 25, 1941 00:00
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US-2235896-A // Communication cable apparatus mounting // Matthews Edgar M. // Bell Telephone Labor Inc
PDF File 2235890.pdf 1.62 MB Shaun Ewing Mar 25, 1941 00:00
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US-2235890-A // Telephone system // King Ralph E. ; Miller Ohmer R. // Bell Telephone Labor Inc
PDF File 2235803.pdf 15.00 MB Shaun Ewing Mar 18, 1941 00:00
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US-2235803-A // Telephone system // Carpenter Warren W. // Bell Telephone Labor Inc
PDF File 2235678.pdf 343 kB Shaun Ewing Mar 18, 1941 00:00
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US-2235678-A // Mounting attachment for telephone instruments // Hammer Karl E. // Bell Telephone Labor Inc
PDF File 2235667.pdf 327 kB Shaun Ewing Mar 18, 1941 00:00
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US-2235667-A // Relaxation oscillator // Blount Frank E. ; Grove Cedar ; Schenck Alfred K. // Bell Telephone Labor Inc
PDF File 2235648.pdf 478 kB Shaun Ewing Mar 18, 1941 00:00
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US-2235648-A // Telephone coin collector // Shann Oscar A. ; Smith Albert K. // Bell Telephone Labor Inc
PDF File 2235521.pdf 413 kB Shaun Ewing Mar 18, 1941 00:00
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US-2235521-A // Frequency indicator // Higgins William H. C. // Bell Telephone Labor Inc
PDF File 2235506.pdf 1.33 MB Shaun Ewing Mar 18, 1941 00:00
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US-2235506-A // Ultra short wave radio system // Schelkunoff Sergei A. // Bell Telephone Labor Inc
PDF File 2235491.pdf 732 kB Shaun Ewing Mar 18, 1941 00:00
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US-2235491-A // Regulator system // Trucksess David E. // Bell Telephone Labor Inc
PDF File 2235411.pdf 501 kB Shaun Ewing Mar 18, 1941 00:00
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US-2235411-A // Regenerative repeater // Watson Edward F. // Bell Telephone Labor Inc
PDF File 2235153.pdf 964 kB Shaun Ewing Mar 18, 1941 00:00
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US-2235153-A // Chain start circuit // Holden William H. T. // Bell Telephone Labor Inc
PDF File 2235132.pdf 314 kB Shaun Ewing Mar 18, 1941 00:00
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US-2235132-A // Magnetic telegraphone // Wooldridge Dean E. // Bell Telephone Labor Inc
PDF File 2235126.pdf 764 kB Shaun Ewing Mar 18, 1941 00:00
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US-2235126-A // Magnetic telegraphone // Towne Charles C. // Bell Telephone Labor Inc
PDF File 2235010.pdf 895 kB Shaun Ewing Mar 18, 1941 00:00
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US-2235010-A // Ultra-short wave transmitting and receiving system // Chaffee Joseph G. // Bell Telephone Labor Inc
PDF File 2235007.pdf 1.16 MB Shaun Ewing Mar 18, 1941 00:00
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US-2235007-A // Signal transmission system // Bjornson Bjorn G. // Bell Telephone Labor Inc
PDF File 2234690.pdf 363 kB Shaun Ewing Mar 11, 1941 00:00
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US-2234690-A // Inverter oscillator // Depp Wallace A. // Bell Telephone Labor Inc
PDF File 2234687.pdf 329 kB Shaun Ewing Mar 11, 1941 00:00
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US-2234687-A // Balanced vacuum tube circuit // Budenbom Horace T. // Bell Telephone Labor Inc
PDF File 2234587.pdf 1.62 MB Shaun Ewing Mar 11, 1941 00:00
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US-2234587-A // Radio direction finding system // Budenbom Horace T. // Bell Telephone Labor Inc
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