Name Size Creator Creation Date Labels Comment  
PDF File 3769462.pdf 1.70 MB Shaun Ewing Oct 30, 1973 00:00
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US-3769462-A // Private automatic branch exchange service circuit complex // Russell S,us ; Gueldenpfennig K,us ; Pommerening U,us // Stromberg Carlson Corp
PDF File 3718907.pdf 1.69 MB Shaun Ewing Feb 27, 1973 00:00
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US-3718907-A // Scanner circuit // Altenburger O,us // Stromberg Carlson Corp
PDF File 2700069.pdf 1.69 MB Shaun Ewing Jan 18, 1955 00:00
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US-2700069-A // Measured service telephone system // Pharis William W. ; Reagan Leon H. // Stromberg Carlson Co
PDF File 3826876.pdf 1.68 MB Shaun Ewing Jul 30, 1974 00:00
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US-3826876-A // Message waiting and do-not-disturb // Gueldenpfenning K,us ; Pommerening U,us ; Russell S,us // Stromberg Carlson Corp
PDF File 2409145.pdf 1.67 MB Shaun Ewing Oct 08, 1946 00:00
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US-2409145-A // Control and trigger circuit for telephone systems and the like // Morris Frank A. // Stromberg Carlson Co
PDF File 901689.pdf 1.67 MB Shaun Ewing Oct 20, 1908 00:00
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US-901689-A // Telephone-exchange system. // Merritt S. Conner // Stromberg Carlson Telephone
PDF File 3854014.pdf 1.67 MB Shaun Ewing Dec 10, 1974 00:00
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US-3854014-A // Call back arrangement // Bansemir R,us ; Akin R,us ; Altenburger O,us // Stromberg Carlson Corp
PDF File 2562544.pdf 1.66 MB Shaun Ewing Jul 31, 1951 00:00
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US-2562544-A // Watertight plug and jack // Gleason Howard S. // Stromberg Carlson Co
PDF File 4042790.pdf 1.66 MB Shaun Ewing Aug 16, 1977 00:00
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US-4042790-A // Voice guard circuit for a tone receiver // Richards; Glenn L. // Stromberg-Carlson Corporation
PDF File 3627956.pdf 1.65 MB Shaun Ewing Dec 14, 1971 00:00
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US-3627956-A // Semiautomatic operator-controlled telephone system // Klaus Gueldenpfennig ; Gerhard O.k. Schneider // Stromberg Carlson Corp
PDF File 3601542.pdf 1.64 MB Shaun Ewing Aug 24, 1971 00:00
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US-3601542-A // Dynamic recorder system for toll ticketing // Donald R. Gill ; William H. Stewart ; Bernard H. Root // Stromberg Carlson Corp
PDF File 2647206.pdf 1.63 MB Shaun Ewing Jul 28, 1953 00:00
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US-2647206-A // Electronic switching device // Trousdale Robert B. // Stromberg Carlson Co
PDF File 2684409.pdf 1.63 MB Shaun Ewing Jul 20, 1954 00:00
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US-2684409-A // Remote testing apparatus for telephone dials // Kessler Frank // Stromberg Carlson Co
PDF File 2415718.pdf 1.61 MB Shaun Ewing Feb 11, 1947 00:00
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US-2415718-A // Telescript communication system // Wilson Edward S. ; Schnepf William K. // Stromberg Carlson Co
PDF File 1043314.pdf 1.60 MB Shaun Ewing Nov 05, 1912 00:00
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US-1043314-A // Telephone system. // Charles L. Goodrum // Stromberg Carlson Telephone
PDF File 1664943.pdf 1.60 MB Shaun Ewing Apr 03, 1928 00:00
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US-1664943-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 4042789.pdf 1.59 MB Shaun Ewing Aug 16, 1977 00:00
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US-4042789-A // Tone combination detector and coincidence timer circuit // Richards; Glenn L. // Stromberg-Carlson Corporation
PDF File 2659770.pdf 1.59 MB Shaun Ewing Nov 17, 1953 00:00
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US-2659770-A // Ringing control circuit for telephone systems // Elliott George // Stromberg Carlson Co
PDF File 2381516.pdf 1.59 MB Shaun Ewing Aug 07, 1945 00:00
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US-2381516-A // Relay type key sender // Powell Winfred T. // Stromberg Carlson Co
PDF File 1540418.pdf 1.59 MB Shaun Ewing Jun 02, 1925 00:00
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US-1540418-A // Automatic telephone trunking system // Powell Winfred T. // Stromberg Carlson Telephone
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