Name Size Creator Creation Date Labels Comment  
PDF File 1724923.pdf 404 kB Shaun Ewing Aug 20, 1929 00:00
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US-1724923-A // Submarine-telegraph system // Gilbert John J. // Bell Telephone Labor Inc
PDF File 1724905.pdf 1.15 MB Shaun Ewing Aug 20, 1929 00:00
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US-1724905-A // Telephone system // Caverly Harry C. // Bell Telephone Labor Inc
PDF File 1722805.pdf 393 kB Shaun Ewing Jul 30, 1929 00:00
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US-1722805-A // Sound radiator // Lane Clarence E. // Bell Telephone Labor Inc
PDF File 1722751.pdf 643 kB Shaun Ewing Jul 30, 1929 00:00
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US-1722751-A // Optical inspection system // Jones Reginald L. // Bell Telephone Labor Inc
PDF File 1722347.pdf 330 kB Shaun Ewing Jul 30, 1929 00:00
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US-1722347-A // Acoustic apparatus // Wente Edward C. // Bell Telephone Labor Inc
PDF File 1722064.pdf 1.05 MB Shaun Ewing Jul 23, 1929 00:00
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US-1722064-A // Telephone-exchange system // Stearn Franklin A. ; Clark Edgar H. // Bell Telephone Labor Inc
PDF File 1722047.pdf 698 kB Shaun Ewing Jul 23, 1929 00:00
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US-1722047-A // System for signaling // Heising Raymond A. // Bell Telephone Labor Inc
PDF File 1722045.pdf 307 kB Shaun Ewing Jul 23, 1929 00:00
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US-1722045-A // Transmission system // Fry Jacob R. // Bell Telephone Labor Inc
PDF File 1722039.pdf 342 kB Shaun Ewing Jul 23, 1929 00:00
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US-1722039-A // Signal-operated repeater circuits // Dudley Homer W. // Bell Telephone Labor Inc
PDF File 1722033.pdf 561 kB Shaun Ewing Jul 23, 1929 00:00
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US-1722033-A // Telephone-exchange system // Bragg Herbert E. // Bell Telephone Labor Inc
PDF File 1722027.pdf 219 kB Shaun Ewing Jul 23, 1929 00:00
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US-1722027-A // Acoustic device // Wente Edward C. // Bell Telephone Labor Inc
PDF File 1722016.pdf 302 kB Shaun Ewing Jul 23, 1929 00:00
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US-1722016-A // Electrical conductor and method of making same // Ronci Victor L. // Bell Telephone Labor Inc
PDF File 1719499.pdf 267 kB Shaun Ewing Jul 02, 1929 00:00
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US-1719499-A // Telephone system // Bowne Langford J. // Bell Telephone Labor Inc
PDF File 1719495.pdf 315 kB Shaun Ewing Jul 02, 1929 00:00
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US-1719495-A // Oscillation generator // Wiese Floyd M. // Bell Telephone Labor Inc
PDF File 1719494.pdf 716 kB Shaun Ewing Jul 02, 1929 00:00
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US-1719494-A // Telephone-exchange system // Ulrich Horace W. ; Prince William B. // Bell Telephone Labor Inc
PDF File 1719492.pdf 516 kB Shaun Ewing Jul 02, 1929 00:00
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US-1719492-A // Regulator system // Stoller Hugh M. // Bell Telephone Labor Inc
PDF File 1719491.pdf 480 kB Shaun Ewing Jul 02, 1929 00:00
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US-1719491-A // Electric regulator // Stoller Hugh M. ; Morton Edmund R. // Bell Telephone Labor Inc
PDF File 1719489.pdf 184 kB Shaun Ewing Jul 02, 1929 00:00
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US-1719489-A // Telegraph printer // Shangle Amos H. // Bell Telephone Labor Inc
PDF File 1719485.pdf 1.14 MB Shaun Ewing Jul 02, 1929 00:00
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US-1719485-A // Power-line carrier wave signaling system // Pease Reginald M. // Bell Telephone Labor Inc
PDF File 1719479.pdf 528 kB Shaun Ewing Jul 02, 1929 00:00
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US-1719479-A // Composite conductor // Legg Victor E. // Bell Telephone Labor Inc
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