Name Size Creator Creation Date Labels Comment  
PDF File 2248569.pdf 576 kB Shaun Ewing Jul 08, 1941 00:00
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US-2248569-A // Magnetic micrometer // Ellwood Walter B. // Bell Telephone Labor Inc
PDF File 2248566.pdf 4.62 MB Shaun Ewing Jul 08, 1941 00:00
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US-2248566-A // Telephone system // Busch Aloysius J. // Bell Telephone Labor Inc
PDF File 2248545.pdf 442 kB Shaun Ewing Jul 08, 1941 00:00
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US-2248545-A // Contact testing device // Mcconnell John H. // Bell Telephone Labor Inc
PDF File 2248250.pdf 573 kB Shaun Ewing Jul 08, 1941 00:00
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US-2248250-A // Single side-band modulation // Peterson Eugene // Bell Telephone Labor Inc
PDF File 2248215.pdf 1.30 MB Shaun Ewing Jul 08, 1941 00:00
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US-2248215-A // Radio direction and distance indicating system // Budenbom Horace T. // Bell Telephone Labor Inc
PDF File 2248212.pdf 1.75 MB Shaun Ewing Jul 08, 1941 00:00
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US-2248212-A // Telephone system // Albert Walter P. // Bell Telephone Labor Inc
PDF File 2248146.pdf 1.05 MB Shaun Ewing Jul 08, 1941 00:00
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US-2248146-A // Telephone system // Williams Samuel B. // Bell Telephone Labor Inc
PDF File 2248057.pdf 422 kB Shaun Ewing Jul 08, 1941 00:00
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US-2248057-A // Electrical cutting device // Bond Walter L. // Bell Telephone Labor Inc
PDF File 2248044.pdf 392 kB Shaun Ewing Jul 08, 1941 00:00
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US-2248044-A // Transposition insulator // Dehmel Richard C. // Bell Telephone Labor Inc
PDF File 2248040.pdf 1.14 MB Shaun Ewing Jul 08, 1941 00:00
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US-2248040-A // Telephone system // Beaumont William M. // Bell Telephone Labor Inc
PDF File 2247960.pdf 619 kB Shaun Ewing Jul 01, 1941 00:00
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US-2247960-A // Tuning fork // Michaels Simon Eugene // Bell Telephone Labor Inc
PDF File 2247936.pdf 768 kB Shaun Ewing Jul 01, 1941 00:00
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US-2247936-A // Apparatus casing // Bishop Walter M. // Bell Telephone Labor Inc
PDF File 2247666.pdf 1.71 MB Shaun Ewing Jul 01, 1941 00:00
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US-2247666-A // Directional antenna system // Potter Ralph K. // Bell Telephone Labor Inc
PDF File 2247662.pdf 1.22 MB Shaun Ewing Jul 01, 1941 00:00
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US-2247662-A // Radiant energy distance measuring system // Newhouse Russell C. // Bell Telephone Labor Inc
PDF File 2247646.pdf 659 kB Shaun Ewing Jul 01, 1941 00:00
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US-2247646-A // Terminal block // Terry Roy V. // Bell Telephone Labor Inc
PDF File 2247559.pdf 267 kB Shaun Ewing Jul 01, 1941 00:00
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US-2247559-A // Wiping solder // Phipps George S. ; Schumacher Earle E. // Bell Telephone Labor Inc
PDF File 2247493.pdf 945 kB Shaun Ewing Jul 01, 1941 00:00
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US-2247493-A // Mercury contact relay // Harrison Henry C. ; Pollard Charles E. // Bell Telephone Labor Inc
PDF File 2247328.pdf 634 kB Shaun Ewing Jun 24, 1941 00:00
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US-2247328-A // Receiving circuit for signaling systems // Davey James R. // Bell Telephone Labor Inc
PDF File 2247214.pdf 439 kB Shaun Ewing Jun 24, 1941 00:00
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US-2247214-A // Oscillograph apparatus // Wagar Harold N. // Bell Telephone Labor Inc
PDF File 2247055.pdf 1.55 MB Shaun Ewing Jun 24, 1941 00:00
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US-2247055-A // Telephone system // Hovland Henry // Bell Telephone Labor Inc
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