Name Size Creator Creation Date Labels Comment  
PDF File 1914099.pdf 353 kB Shaun Ewing Jun 13, 1933 00:00
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US-1914099-A // Acoustic device // Bedell Eual H. // Bell Telephone Labor Inc
PDF File 1913443.pdf 966 kB Shaun Ewing Jun 13, 1933 00:00
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US-1913443-A // Telegraph repeater // Hearn Richard B. // Bell Telephone Labor Inc
PDF File 1913440.pdf 975 kB Shaun Ewing Jun 13, 1933 00:00
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US-1913440-A // Retractile device // Freile Bruce ; Magrath Arthur C. // Bell Telephone Labor Inc
PDF File 1913438.pdf 515 kB Shaun Ewing Jun 13, 1933 00:00
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US-1913438-A // Tuning dial // Flammer Howard A. ; Fracker Edward G. // Bell Telephone Labor Inc
PDF File 1913432.pdf 531 kB Shaun Ewing Jun 13, 1933 00:00
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US-1913432-A // Electric discharge device // Denzler Arthur H. // Bell Telephone Labor Inc
PDF File 1913428.pdf 913 kB Shaun Ewing Jun 13, 1933 00:00
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US-1913428-A // Radio receiver circuit // Bruce Edmond // Bell Telephone Labor Inc
PDF File 1913427.pdf 815 kB Shaun Ewing Jun 13, 1933 00:00
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US-1913427-A // Electric discharge device // Bond Donald S. // Bell Telephone Labor Inc
PDF File 1912456.pdf 270 kB Shaun Ewing Jun 06, 1933 00:00
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US-1912456-A // Transposition bracket // Klein Charles H. // Bell Telephone Labor Inc
PDF File 1912453.pdf 1.29 MB Shaun Ewing Jun 06, 1933 00:00
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US-1912453-A // Telephone exchance system // Hovland Henry // Bell Telephone Labor Inc
PDF File 1912442.pdf 610 kB Shaun Ewing Jun 06, 1933 00:00
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US-1912442-A // Loaded cable // Gilbert John J. // Bell Telephone Labor Inc
PDF File 1912426.pdf 520 kB Shaun Ewing Jun 06, 1933 00:00
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US-1912426-A // Electric meter // Blattner David G. ; Hopkins Harris F. // Bell Telephone Labor Inc
PDF File 1912415.pdf 327 kB Shaun Ewing Jun 06, 1933 00:00
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US-1912415-A // Photo electric system // Uphoff Leslie S. ; Rumpel Carl H. // Bell Telephone Labor Inc
PDF File 1912405.pdf 874 kB Shaun Ewing Jun 06, 1933 00:00
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US-1912405-A // Glass working machine // Ronci Victor L. // Bell Telephone Labor Inc
PDF File 1912404.pdf 601 kB Shaun Ewing Jun 06, 1933 00:00
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US-1912404-A // Electron discharge device // Ronci Victor L. // Bell Telephone Labor Inc
PDF File 1912146.pdf 812 kB Shaun Ewing May 30, 1933 00:00
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US-1912146-A // Glow discharge device // Johnson John B. // Bell Telephone Labor Inc
PDF File 1911858.pdf 237 kB Shaun Ewing May 30, 1933 00:00
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US-1911858-A // Extrusion die // Trebes Bruno M. A. // Bell Telephone Labor Inc
PDF File 1911803.pdf 269 kB Shaun Ewing May 30, 1933 00:00
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US-1911803-A // Insulating material // Burns Robert // Bell Telephone Labor Inc
PDF File 1910982.pdf 801 kB Shaun Ewing May 23, 1933 00:00
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US-1910982-A // Stroboscopic system // Broadwell Howard // Bell Telephone Labor Inc
PDF File 1910981.pdf 290 kB Shaun Ewing May 23, 1933 00:00
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US-1910981-A // Acoustic dampening device // Bescherer Edwin A. // Bell Telephone Labor Inc
PDF File 1910980.pdf 695 kB Shaun Ewing May 23, 1933 00:00
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US-1910980-A // Transmitter filling machine // Bennett Arthur F. // Bell Telephone Labor Inc
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