Name Size Creator Creation Date Labels Comment  
PDF File 836611.pdf 697 kB Shaun Ewing Nov 20, 1906 00:00
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US-836611-A // Regulating device for telephone relays and transmitters. // Herbert E. Shreeve // American Telephone & Telegraph
PDF File 836612.pdf 675 kB Shaun Ewing Nov 20, 1906 00:00
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US-836612-A // Regulating device for telephone relays and transmitters. // Herbert E. Shreeve // American Telephone & Telegraph
PDF File 840987.pdf 396 kB Shaun Ewing Jan 08, 1907 00:00
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US-840987-A // Telegraph-relay. // William E. Athearn // American Telephone & Telegraph
PDF File 845157.pdf 434 kB Shaun Ewing Feb 26, 1907 00:00
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US-845157-A // Composite telephonic and telegraphic circuit. // George M. Yorke // American Telephone & Telegraph
PDF File 851856.pdf 383 kB Shaun Ewing Apr 30, 1907 00:00
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US-851856-A // Means for nullifying inductive interference between parallel circuits. // Edward Blakeney // American Telephone & Telegraph
PDF File 855394.pdf 278 kB Shaun Ewing May 28, 1907 00:00
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US-855394-A // Telephone. // Oscar F. Falk // American Telephone & Telegraph
PDF File 855395.pdf 240 kB Shaun Ewing May 28, 1907 00:00
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US-855395-A // Telephone-transmitter. // Oscar F. Falk // American Telephone & Telegraph
PDF File 863230.pdf 482 kB Shaun Ewing Aug 13, 1907 00:00
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US-863230-A // Telephone repeater-circuit. // Herbert E. Shreeve // American Telephone & Telegraph
PDF File 863247.pdf 568 kB Shaun Ewing Aug 13, 1907 00:00
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US-863247-A // Method of and apparatus for transmitting electrical energy. // Walter C. Yeatman // American Telephone & Telegraph
PDF File 874826.pdf 536 kB Shaun Ewing Dec 24, 1907 00:00
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US-874826-A // Nullifying disturbances in telegraphic or other signaling circuits. // Edward Blakeney ; Robert E. Chetwood, Jr. // American Telephone & Telegraph
PDF File 893319.pdf 473 kB Shaun Ewing Jul 14, 1908 00:00
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US-893319-A // Cable raising or separating device. // Andrew G. Gillespie ; William E. Potter // American Telephone & Telegraph
PDF File 893414.pdf 959 kB Shaun Ewing Jul 14, 1908 00:00
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US-893414-A // Telephone switching and signaling apparatus. // James G. Wray ; Herbert T. Gardner ; William G. Kinton // American Telephone & Telegraph
PDF File 896300.pdf 266 kB Shaun Ewing Aug 18, 1908 00:00
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US-896300-A // Electrical testing instrument. // Cameron De Witt Jarvis // American Telephone & Telegraph
PDF File 897028.pdf 632 kB Shaun Ewing Aug 25, 1908 00:00
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US-897028-A // Circuit system for telephone repeating apparatus. // Herbert E. Shreeve // American Telephone & Telegraph
PDF File 898073.pdf 319 kB Shaun Ewing Sept 08, 1908 00:00
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US-898073-A // Apparatus for speech transmission. // Herbert E. Shreeve // American Telephone & Telegraph
PDF File 905628.pdf 710 kB Shaun Ewing Dec 01, 1908 00:00
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US-905628-A // Telegraphic repeating apparatus. // William E. Athearn // American Telephone & Telegraph
PDF File 907062.pdf 340 kB Shaun Ewing Dec 15, 1908 00:00
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US-907062-A // Telephone-drop. // Tiodolf Lidberg // Swedish American Telephone Company
PDF File 912908.pdf 457 kB Shaun Ewing Feb 16, 1909 00:00
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US-912908-A // Telephone repeating apparatus and circuit. // John J. Skidmore // American Telephone & Telegraph
PDF File 913613.pdf 1.11 MB Shaun Ewing Feb 23, 1909 00:00
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US-913613-A // Call-distributing telephone-exchange details. // Sidney Hand Browne // American Telephone & Telegraph
PDF File 920258.pdf 1.63 MB Shaun Ewing May 04, 1909 00:00
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US-920258-A // System for telephone-trunking. // Sidney Hand Browne // American Telephone & Telegraph
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