Name Size Creator Creation Date Labels Comment  
PDF File 1750668.pdf 941 kB Shaun Ewing Mar 18, 1930 00:00
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US-1750668-A // Determining movement and position of moving objects // Green Estill I. // American Telephone & Telegraph
PDF File 1678672.pdf 938 kB Shaun Ewing Jul 31, 1928 00:00
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US-1678672-A // Two-way radio telephone system // Espenschied Lloyd ; Anderson Clifford N. // American Telephone & Telegraph
PDF File 1732312.pdf 937 kB Shaun Ewing Oct 22, 1929 00:00
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US-1732312-A // Electrical delay network // Nyquist Harry ; Pfleger Kenneth W. // American Telephone & Telegraph
PDF File 1490166.pdf 935 kB Shaun Ewing Apr 15, 1924 00:00
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US-1490166-A // Carrier telegraph circuits // Espenschied Lloyd // American Telephone & Telegraph
PDF File 1568996.pdf 933 kB Shaun Ewing Jan 12, 1926 00:00
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US-1568996-A // Electrical measuring apparatus // Best Fred H. // American Telephone & Telegraph
PDF File 1565544.pdf 932 kB Shaun Ewing Dec 15, 1925 00:00
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US-1565544-A // Radio transmission system // Bown Ralph // American Telephone & Telegraph
PDF File 1452527.pdf 931 kB Shaun Ewing Apr 24, 1923 00:00
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US-1452527-A // Transmitting apparatus for electric telegraphs // Potts Louis M. // American Telephone & Telegraph
PDF File 1709901.pdf 930 kB Shaun Ewing Apr 23, 1929 00:00
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US-1709901-A // Secret-signaling system // Espenschied Lloyd ; Gillett Glenn D. // American Telephone & Telegraph
PDF File 1410545.pdf 929 kB Shaun Ewing Mar 28, 1922 00:00
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US-1410545-A // Intercommunicating system // Marrows Leon Dwight // American Telephone & Telegraph
PDF File 1684455.pdf 928 kB Shaun Ewing Sept 18, 1928 00:00
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US-1684455-A // Multiplex carrier-current signaling // Nyquist Harry // American Telephone & Telegraph
PDF File 1720770.pdf 928 kB Shaun Ewing Jul 16, 1929 00:00
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US-1720770-A // Associated resonant circuits // Stone John Stone // American Telephone & Telegraph
PDF File 1403841.pdf 926 kB Shaun Ewing Jan 17, 1922 00:00
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US-1403841-A // Frequency-control system // Carson John R. // American Telephone & Telegraph
PDF File 1553454.pdf 925 kB Shaun Ewing Sept 15, 1925 00:00
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US-1553454-A // Radio repeating system // Martin De Loss K. // American Telephone & Telegraph
PDF File 1601808.pdf 924 kB Shaun Ewing Oct 05, 1926 00:00
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US-1601808-A // Multiplex signaling system // Nyquist Harry // American Telephone & Telegraph
PDF File 1462526.pdf 921 kB Shaun Ewing Jul 24, 1923 00:00
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US-1462526-A // Composite ringer set // Toomey John F. ; Harrison William H. // American Telephone & Telegraph
PDF File 1567208.pdf 918 kB Shaun Ewing Dec 29, 1925 00:00
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US-1567208-A // Program transmission over wires // Toomey John F. ; Phelps Henry E. // American Telephone & Telegraph
PDF File 1776310.pdf 914 kB Shaun Ewing Sept 23, 1930 00:00
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US-1776310-A // Two-way negative-impedance repeater // Crisson George // American Telephone & Telegraph
PDF File 1400189.pdf 913 kB Shaun Ewing Dec 13, 1921 00:00
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US-1400189-A // Means for controlling repeater-circuits // Toomey John F. // American Telephone & Telegraph
PDF File 1375414.pdf 910 kB Shaun Ewing Apr 19, 1921 00:00
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US-1375414-A // Apparatus for testing capacity deviations and unbalance of electric conductors // Osborne Harold S. // American Telephone & Telegraph
PDF File 1557079.pdf 910 kB Shaun Ewing Oct 13, 1925 00:00
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US-1557079-A // Telephone signaling equipment // Morehouse Lyman F. // American Telephone & Telegraph
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