Name Size Creator Creation Date Labels Comment  
PDF File 2132225.pdf 271 kB Shaun Ewing Oct 04, 1938 00:00
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US-2132225-A // Timing apparatus // Subrizi Victor // Bell Telephone Labor Inc
PDF File 2132214.pdf 499 kB Shaun Ewing Oct 04, 1938 00:00
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US-2132214-A // Measuring system // Myers Oscar // Bell Telephone Labor Inc
PDF File 2132213.pdf 1.32 MB Shaun Ewing Oct 04, 1938 00:00
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US-2132213-A // Recorder of liquid level heights // Locke George A. // Bell Telephone Labor Inc
PDF File 2132205.pdf 1.16 MB Shaun Ewing Oct 04, 1938 00:00
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US-2132205-A // Secret transmission // Dickieson Alton C. // Bell Telephone Labor Inc
PDF File 2132203.pdf 254 kB Shaun Ewing Oct 04, 1938 00:00
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US-2132203-A // Electrical connecter // Clark James E. // Bell Telephone Labor Inc
PDF File 2131870.pdf 2.92 MB Shaun Ewing Oct 04, 1938 00:00
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US-2131870-A // Telegraph system // Cramer Walter W. // Bell Telephone Labor Inc
PDF File 2131715.pdf 880 kB Shaun Ewing Sept 27, 1938 00:00
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US-2131715-A // Electrooptical apparatus // Jr. Millard W. Baldwin, // Bell Telephone Labor Inc
PDF File 2131593.pdf 320 kB Shaun Ewing Sept 27, 1938 00:00
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US-2131593-A // Acoustic device // Marshall Robert N. // Bell Telephone Labor Inc
PDF File 2131589.pdf 568 kB Shaun Ewing Sept 27, 1938 00:00
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US-2131589-A // Signaling system // Halligan Clair W. // Bell Telephone Labor Inc
PDF File 2131585.pdf 423 kB Shaun Ewing Sept 27, 1938 00:00
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US-2131585-A // Supply circuit // Curtis Austen M. // Bell Telephone Labor Inc
PDF File 2131584.pdf 246 kB Shaun Ewing Sept 27, 1938 00:00
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US-2131584-A // Switching device // Cruser Victor I. // Bell Telephone Labor Inc
PDF File 2131580.pdf 918 kB Shaun Ewing Sept 27, 1938 00:00
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US-2131580-A // Control circuits // Bjornson Bjorn G. // Bell Telephone Labor Inc
PDF File 2131578.pdf 417 kB Shaun Ewing Sept 27, 1938 00:00
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US-2131578-A // Monitoring circuit for telephone systems // Bachelet Albert E. ; Gibson Earl S. // Bell Telephone Labor Inc
PDF File 2131393.pdf 724 kB Shaun Ewing Sept 27, 1938 00:00
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US-2131393-A // Electric wave amplifying system // Stillwell Albert L. // Bell Telephone Labor Inc
PDF File 2131366.pdf 528 kB Shaun Ewing Sept 27, 1938 00:00
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US-2131366-A // Electric wave amplifying system // Black Harold S. // Bell Telephone Labor Inc
PDF File 2131365.pdf 1.51 MB Shaun Ewing Sept 27, 1938 00:00
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US-2131365-A // Wave translation system // Black Harold S. // Bell Telephone Labor Inc
PDF File 2131173.pdf 1.39 MB Shaun Ewing Sept 27, 1938 00:00
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US-2131173-A // Cable sheath extruding press // Greenall Charles H. // Bell Telephone Labor Inc
PDF File 2130517.pdf 569 kB Shaun Ewing Sept 20, 1938 00:00
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US-2130517-A // Gain control circuits // Wilson Ira G. // Bell Telephone Labor Inc
PDF File 2130510.pdf 423 kB Shaun Ewing Sept 20, 1938 00:00
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US-2130510-A // Electron discharge device // Samuel Arthur L. // Bell Telephone Labor Inc
PDF File 2130508.pdf 288 kB Shaun Ewing Sept 20, 1938 00:00
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US-2130508-A // Inductance device // Peterson Eugene // Bell Telephone Labor Inc
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