Name Size Creator Creation Date Labels Comment  
PDF File 2121142.pdf 2.34 MB Shaun Ewing Jun 21, 1938 00:00
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US-2121142-A // System for the artificial production of vocal or other sounds // Dudley Homer W. // Bell Telephone Labor Inc
PDF File 2121141.pdf 393 kB Shaun Ewing Jun 21, 1938 00:00
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US-2121141-A // Electrical power indicating apparatus // Lange Owen E. De // Bell Telephone Labor Inc
PDF File 2120994.pdf 719 kB Shaun Ewing Jun 21, 1938 00:00
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US-2120994-A // Carrier communication system // Tidd Warren H. // Bell Telephone Labor Inc
PDF File 2120989.pdf 619 kB Shaun Ewing Jun 21, 1938 00:00
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US-2120989-A // Mechanical drive // Pfannenstiehl Harry // Bell Telephone Labor Inc
PDF File 2120985.pdf 344 kB Shaun Ewing Jun 21, 1938 00:00
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US-2120985-A // Electromagnetic device // Melhose Alfred E. // Bell Telephone Labor Inc
PDF File 2120979.pdf 299 kB Shaun Ewing Jun 21, 1938 00:00
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US-2120979-A // Acoustic element for sound studios // Hunt Franklin L. // Bell Telephone Labor Inc
PDF File 2120973.pdf 260 kB Shaun Ewing Jun 21, 1938 00:00
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US-2120973-A // Electrical coil // Dietze Eginhard ; Foley John W. // Bell Telephone Labor Inc
PDF File 2120972.pdf 847 kB Shaun Ewing Jun 21, 1938 00:00
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US-2120972-A // Converting system // Blount Frank E. // Bell Telephone Labor Inc
PDF File 2120971.pdf 1.59 MB Shaun Ewing Jun 21, 1938 00:00
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US-2120971-A // System and method of determining distance // Bailey Arnold B. // Bell Telephone Labor Inc
PDF File 2120421.pdf 312 kB Shaun Ewing Jun 14, 1938 00:00
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US-2120421-A // Relay // Wagar Harold N. // Bell Telephone Labor Inc
PDF File 2120419.pdf 1.78 MB Shaun Ewing Jun 14, 1938 00:00
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US-2120419-A // Telephone system // Stokely Grace Macdonald // Bell Telephone Labor Inc
PDF File 2120413.pdf 666 kB Shaun Ewing Jun 14, 1938 00:00
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US-2120413-A // Selective switch // Matthies William H. // Bell Telephone Labor Inc
PDF File 2120408.pdf 727 kB Shaun Ewing Jun 14, 1938 00:00
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US-2120408-A // Selective switch // Hickman Clarence N. // Bell Telephone Labor Inc
PDF File 2120407.pdf 687 kB Shaun Ewing Jun 14, 1938 00:00
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US-2120407-A // Timing apparatus // Hardy Frank // Bell Telephone Labor Inc
PDF File 2120398.pdf 510 kB Shaun Ewing Jun 14, 1938 00:00
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US-2120398-A // Cable stripping tool // Edwards Paul G. ; Jordan Homer G. ; Shackleton Samuel P. // Bell Telephone Labor Inc
PDF File 2120396.pdf 349 kB Shaun Ewing Jun 14, 1938 00:00
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US-2120396-A // Electrical contact member // Domaleski Joseph V. // Bell Telephone Labor Inc
PDF File 2119855.pdf 687 kB Shaun Ewing Jun 07, 1938 00:00
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US-2119855-A // Electric discharge device // Depew Charles // Bell Telephone Labor Inc
PDF File 2119853.pdf 566 kB Shaun Ewing Jun 07, 1938 00:00
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US-2119853-A // Electric wave transmission system // Curtis Harold E. // Bell Telephone Labor Inc
PDF File 2119607.pdf 1.02 MB Shaun Ewing Jun 07, 1938 00:00
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US-2119607-A // Radio communicating system // Sterba Ernest J. // Bell Telephone Labor Inc
PDF File 2119559.pdf 1.02 MB Shaun Ewing Jun 07, 1938 00:00
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US-2119559-A // Electron discharge device // Ronci Victor L. // Bell Telephone Labor Inc
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