Name Size Creator Creation Date Labels Comment  
PDF File 2088750.pdf 1.45 MB Shaun Ewing Aug 03, 1937 00:00
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US-2088750-A // Answer-back device for machine switching printing telegraph exchange systems // Kinkead Fullerton S. // Bell Telephone Labor Inc
PDF File 2088749.pdf 843 kB Shaun Ewing Aug 03, 1937 00:00
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US-2088749-A // Reception of guided waves // King Archic P. // Bell Telephone Labor Inc
PDF File 2088733.pdf 2.17 MB Shaun Ewing Aug 03, 1937 00:00
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US-2088733-A // Printing telegraph system // White Charles // Bell Telephone Labor Inc
PDF File 2088318.pdf 213 kB Shaun Ewing Jul 27, 1937 00:00
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US-2088318-A // Relay circuit // Busch Aloysius J. // Bell Telephone Labor Inc
PDF File 2088317.pdf 1.28 MB Shaun Ewing Jul 27, 1937 00:00
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US-2088317-A // Electric discharge tube testing and measuring circuit // Bachelet Albert E. // Bell Telephone Labor Inc
PDF File 2088314.pdf 412 kB Shaun Ewing Jul 27, 1937 00:00
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US-2088314-A // Composite set // Whittle Horace // Bell Telephone Labor Inc
PDF File 2088311.pdf 1.05 MB Shaun Ewing Jul 27, 1937 00:00
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US-2088311-A // Telephone ringing system // Stacy Leland J. // Bell Telephone Labor Inc
PDF File 2088309.pdf 491 kB Shaun Ewing Jul 27, 1937 00:00
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US-2088309-A // Coin collector apparatus // Shann Oscar A. // Bell Telephone Labor Inc
PDF File 2088305.pdf 443 kB Shaun Ewing Jul 27, 1937 00:00
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US-2088305-A // Telephone system // Myers Oscar // Bell Telephone Labor Inc
PDF File 2088297.pdf 406 kB Shaun Ewing Jul 27, 1937 00:00
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US-2088297-A // Harmonic analyzer // Jr. Walter Koenig, // Bell Telephone Labor Inc
PDF File 2088292.pdf 606 kB Shaun Ewing Jul 27, 1937 00:00
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US-2088292-A // Electrical communication system // Eglin James M. // Bell Telephone Labor Inc
PDF File 2087327.pdf 644 kB Shaun Ewing Jul 20, 1937 00:00
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US-2087327-A // Electron discharge device // Mcnally James O. // Bell Telephone Labor Inc
PDF File 2087326.pdf 1.85 MB Shaun Ewing Jul 20, 1937 00:00
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US-2087326-A // Standard frequency system // Marrison Warren A. // Bell Telephone Labor Inc
PDF File 2087316.pdf 1.23 MB Shaun Ewing Jul 20, 1937 00:00
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US-2087316-A // Volume control system // Jr. Stephen Doba, // Bell Telephone Labor Inc
PDF File 2087314.pdf 1.31 MB Shaun Ewing Jul 20, 1937 00:00
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US-2087314-A // Echo suppressor circuits // Bjornson Bjorn G. // Bell Telephone Labor Inc
PDF File 2086649.pdf 720 kB Shaun Ewing Jul 13, 1937 00:00
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US-2086649-A // Acoustic device // Thuras Albert L. // Bell Telephone Labor Inc
PDF File 2086638.pdf 1.08 MB Shaun Ewing Jul 13, 1937 00:00
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US-2086638-A // Regenerative telegraph repeater // Rasmussen Osvald E. // Bell Telephone Labor Inc
PDF File 2086630.pdf 239 kB Shaun Ewing Jul 13, 1937 00:00
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US-2086630-A // Telephone receiver // Miner Russell C. // Bell Telephone Labor Inc
PDF File 2086629.pdf 1.33 MB Shaun Ewing Jul 13, 1937 00:00
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US-2086629-A // Shielded cable system // Mead Sallie P. // Bell Telephone Labor Inc
PDF File 2086628.pdf 390 kB Shaun Ewing Jul 13, 1937 00:00
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US-2086628-A // Switching device // Matejka Gladstone // Bell Telephone Labor Inc
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