Name Size Creator Creation Date Labels Comment  
PDF File 762341.pdf 305 kB Shaun Ewing Jun 14, 1904 00:00
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US-762341-A // Earth or ground wire attachment. // Joseph J. O'Connell // American Telephone & Telegraph
PDF File 762820.pdf 291 kB Shaun Ewing Jun 14, 1904 00:00
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US-762820-A // Electric telephone. // Ernst Gundlach // American Telephone & Telegraph
PDF File 767900.pdf 481 kB Shaun Ewing Aug 16, 1904 00:00
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US-767900-A // Insulated conductor and process. // John C. Lee // American Telephone & Telegraph
PDF File 772023.pdf 3.03 MB Shaun Ewing Oct 11, 1904 00:00
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US-772023-A // Automatic telephone-exchange system and apparatus. // Albert M. Bullard ; Louis A. Falk // American Telephone & Telegraph
PDF File 772024.pdf 1.47 MB Shaun Ewing Oct 11, 1904 00:00
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US-772024-A // Automatic telephone-exchange system and apparatus. // Albert M. Bullard ; Louis A. Falk // American Telephone & Telegraph
PDF File 778297.pdf 729 kB Shaun Ewing Dec 27, 1904 00:00
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US-778297-A // Composite system duplex-telegraph circuits. // William E. Athearn // American Telephone & Telegraph
PDF File 782892.pdf 798 kB Shaun Ewing Feb 21, 1905 00:00
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US-782892-A // Telegraphic repeating apparatus. // William E. Athearn // American Telephone & Telegraph
PDF File 786148.pdf 768 kB Shaun Ewing Mar 28, 1905 00:00
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US-786148-A // Signal system for electric railways. // Greenleaf Whittier Pickard ; Harold J. W. Fay // American Telephone & Telegraph
PDF File 791655.pdf 1.52 MB Shaun Ewing Jun 06, 1905 00:00
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US-791655-A // Telephone-current reinforcer or relay. // Herbert E. Shreeve // American Telephone & Telegraph
PDF File 791656.pdf 848 kB Shaun Ewing Jun 06, 1905 00:00
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US-791656-A // Telephone-current reinforcer or relay. // Herbert E. Shreeve // American Telephone & Telegraph
PDF File 792248.pdf 631 kB Shaun Ewing Jun 13, 1905 00:00
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US-792248-A // Induction-coil. // George A. Campbell // American Telephone & Telegraph
PDF File 807962.pdf 317 kB Shaun Ewing Dec 19, 1905 00:00
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US-807962-A // Carbon-plate for protective devices. // Greenleaf Whittier Pickard // American Telephone & Telegraph
PDF File 807963.pdf 303 kB Shaun Ewing Dec 19, 1905 00:00
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US-807963-A // Protective device. // Greenleaf Whittier Pickard // American Telephone & Telegraph
PDF File 820176.pdf 917 kB Shaun Ewing May 08, 1906 00:00
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US-820176-A // Telephone-system. // Charles L. Boyce // American Telephone & Telegraph
PDF File 831131.pdf 260 kB Shaun Ewing Sept 18, 1906 00:00
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US-831131-A // Multiconductor-cable. // Walter C. Yeatman // American Telephone & Telegraph
PDF File 833816.pdf 906 kB Shaun Ewing Oct 23, 1906 00:00
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US-833816-A // Telephone-circuit signaling apparatus. // James G. Wray ; Herbert T. Gardner ; William G. Kinton // American Telephone & Telegraph
PDF File 833817.pdf 927 kB Shaun Ewing Oct 23, 1906 00:00
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US-833817-A // Telephone switching and signaling apparatus. // James G. Wray ; Herbert T. Gardner ; William G. Kinton // American Telephone & Telegraph
PDF File 833906.pdf 862 kB Shaun Ewing Oct 23, 1906 00:00
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US-833906-A // Telephone switching and busy-test apparatus. // James G. Wray ; Herbert T. Gardner ; William G. Kinton // American Telephone & Telegraph
PDF File 833907.pdf 746 kB Shaun Ewing Oct 23, 1906 00:00
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US-833907-A // Signaling apparatus for telephone toll-lines. // James G. Wray ; Herbert T. Gardner ; William G. Kinton // American Telephone & Telegraph
PDF File 835037.pdf 386 kB Shaun Ewing Nov 06, 1906 00:00
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US-835037-A // Telephone repeater circuit and apparatus. // Herbert E. Shreeve // American Telephone & Telegraph
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