Name Size Creator Creation Date Labels Comment  
PDF File 1579837.pdf 1.33 MB Shaun Ewing Apr 06, 1926 00:00
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US-1579837-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1579836.pdf 702 kB Shaun Ewing Apr 06, 1926 00:00
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US-1579836-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1579835.pdf 1.51 MB Shaun Ewing Apr 06, 1926 00:00
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US-1579835-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1575604.pdf 963 kB Shaun Ewing Mar 02, 1926 00:00
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US-1575604-A // Manual telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1575603.pdf 1.18 MB Shaun Ewing Mar 02, 1926 00:00
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US-1575603-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1575602.pdf 1.27 MB Shaun Ewing Mar 02, 1926 00:00
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US-1575602-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1575496.pdf 415 kB Shaun Ewing Mar 02, 1926 00:00
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US-1575496-A // Radioplug // Manson Ray H. // Stromberg Carlson Telephone
PDF File 1575495.pdf 1.09 MB Shaun Ewing Mar 02, 1926 00:00
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US-1575495-A // Manual telephone system // Jr. John H. Levis, // Stromberg Carlson Telephone
PDF File 1572224.pdf 1.05 MB Shaun Ewing Feb 09, 1926 00:00
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US-1572224-A // Long-distance telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1572223.pdf 862 kB Shaun Ewing Feb 09, 1926 00:00
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US-1572223-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1572222.pdf 2.26 MB Shaun Ewing Feb 09, 1926 00:00
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US-1572222-A // Telephone switching system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1569678.pdf 950 kB Shaun Ewing Jan 12, 1926 00:00
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US-1569678-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1569677.pdf 787 kB Shaun Ewing Jan 12, 1926 00:00
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US-1569677-A // Telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1569676.pdf 796 kB Shaun Ewing Jan 12, 1926 00:00
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US-1569676-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1565954.pdf 1.39 MB Shaun Ewing Dec 15, 1925 00:00
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US-1565954-A // Telephone-exchange system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1564020.pdf 1.12 MB Shaun Ewing Dec 01, 1925 00:00
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US-1564020-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1560726.pdf 687 kB Shaun Ewing Nov 10, 1925 00:00
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US-1560726-A // Telephone substation circuit // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1560725.pdf 969 kB Shaun Ewing Nov 10, 1925 00:00
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US-1560725-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1559371.pdf 1.02 MB Shaun Ewing Oct 27, 1925 00:00
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US-1559371-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone
PDF File 1555683.pdf 448 kB Shaun Ewing Sept 29, 1925 00:00
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US-1555683-A // Impulse transmitter // Manson Ray H. // Stromberg Carlson Telephone
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