Name Size Creator Creation Date Labels Comment  
PDF File 1897556.pdf 419 kB Shaun Ewing Feb 14, 1933 00:00
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US-1897556-A // Power supply system for vacuum tube amplieying devices // Graham Virgil M. ; Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1890797.pdf 844 kB Shaun Ewing Dec 13, 1932 00:00
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US-1890797-A // Automatic control for phonographs // Stockton Jack Potter // Stromberg Carlson Telephone
PDF File 1873879.pdf 393 kB Shaun Ewing Aug 23, 1932 00:00
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US-1873879-A // Combined mechanical and electrical radio station selector // Graham Virgil M. // Stromberg Carlson Telephone
PDF File 1873813.pdf 533 kB Shaun Ewing Aug 23, 1932 00:00
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US-1873813-A // Program service system // Bergmann Charles H. // Stromberg Carlson Telephone
PDF File 1873772.pdf 1.32 MB Shaun Ewing Aug 23, 1932 00:00
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US-1873772-A // Metering system // Jr. John H. Levis, // Stromberg Carlson Telephone
PDF File 1873704.pdf 378 kB Shaun Ewing Aug 23, 1932 00:00
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US-1873704-A // Variable capacitor test // Graham Virgil M. // Stromberg Carlson Telephone
PDF File 1873358.pdf 2.84 MB Shaun Ewing Aug 23, 1932 00:00
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US-1873358-A // Phonograph // Stockton Jack Potter // Stromberg Carlson Telephone
PDF File 1861754.pdf 1.89 MB Shaun Ewing Jun 07, 1932 00:00
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US-1861754-A // Call distributing telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1853174.pdf 603 kB Shaun Ewing Apr 12, 1932 00:00
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US-1853174-A // Sound reproducing device // Olney Benjamin // Stromberg Carlson Telephone
PDF File 1851387.pdf 410 kB Shaun Ewing Mar 29, 1932 00:00
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US-1851387-A // Radio receiving system // Graham Virgil M. // Stromberg Carlson Telephone
PDF File 1851385.pdf 531 kB Shaun Ewing Mar 29, 1932 00:00
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US-1851385-A // Telephone system // Fitzgerald John H. // Stromberg Carlson Telephone
PDF File 1812641.pdf 1.37 MB Shaun Ewing Jun 30, 1931 00:00
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US-1812641-A // Remote control magneto telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1812454.pdf 2.96 MB Shaun Ewing Jun 30, 1931 00:00
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US-1812454-A // Phonograph // Stockton Jack Potter // Stromberg Carlson Telephone
PDF File 1812169.pdf 684 kB Shaun Ewing Jun 30, 1931 00:00
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US-1812169-A // Selective program service system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1797926.pdf 1.08 MB Shaun Ewing Mar 24, 1931 00:00
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US-1797926-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1797891.pdf 423 kB Shaun Ewing Mar 24, 1931 00:00
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US-1797891-A // Combined receiver and microphone // Young Frederic C. // Stromberg Carlson Telephone
PDF File 1793959.pdf 581 kB Shaun Ewing Feb 24, 1931 00:00
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US-1793959-A // Radio receiving system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1788471.pdf 2.18 MB Shaun Ewing Jan 13, 1931 00:00
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US-1788471-A // Remote-control magneto-telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1781916.pdf 306 kB Shaun Ewing Nov 18, 1930 00:00
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US-1781916-A // Telephone substation equipment // Dickman John A. // Stromberg Carlson Telephone
PDF File 1766402.pdf 1.20 MB Shaun Ewing Jun 24, 1930 00:00
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US-1766402-A // Remote-control telephone system // Powell Winfred T. // Stromberg Carlson Telephone
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