Name Size Creator Creation Date Labels Comment  
PDF File 1866603.pdf 1.18 MB Shaun Ewing Jul 12, 1932 00:00
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US-1866603-A // Acoustic device // Schlenker Vesper A. // Bell Telephone Labor Inc
PDF File 1866604.pdf 326 kB Shaun Ewing Jul 12, 1932 00:00
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US-1866604-A // Electrolytic device // Siegmund Humphreys O. // Bell Telephone Labor Inc
PDF File 1866924.pdf 444 kB Shaun Ewing Jul 12, 1932 00:00
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US-1866924-A // Magnetic material // Cioffi Paul P. // Bell Telephone Labor Inc
PDF File 1866925.pdf 401 kB Shaun Ewing Jul 12, 1932 00:00
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US-1866925-A // Magnetic material // Cioffi Paul P. // Bell Telephone Labor Inc
PDF File 1867333.pdf 343 kB Shaun Ewing Jul 12, 1932 00:00
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US-1867333-A // Telegraph exchange switchboard // Smith Edward M. // Bell Telephone Labor Inc
PDF File 1867340.pdf 446 kB Shaun Ewing Jul 12, 1932 00:00
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US-1867340-A // Electrooptical apparatus // Weinhart Howard W. ; Hall Howard // Bell Telephone Labor Inc
PDF File 1867350.pdf 475 kB Shaun Ewing Jul 12, 1932 00:00
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US-1867350-A // Artificial larynx // Burchett George W. // Bell Telephone Labor Inc
PDF File 1867356.pdf 1015 kB Shaun Ewing Jul 12, 1932 00:00
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US-1867356-A // Electric wave translating system // Friis Harald T. // Bell Telephone Labor Inc
PDF File 1867362.pdf 449 kB Shaun Ewing Jul 12, 1932 00:00
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US-1867362-A // Insulation of metal bodies // Lathrop Hubbel // Bell Telephone Labor Inc
PDF File 1867368.pdf 432 kB Shaun Ewing Jul 12, 1932 00:00
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US-1867368-A // Testing system // Massonneau Robert F. // Bell Telephone Labor Inc
PDF File 1867373.pdf 579 kB Shaun Ewing Jul 12, 1932 00:00
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US-1867373-A // Motor control system // Morton Edmund R. // Bell Telephone Labor Inc
PDF File 1867380.pdf 376 kB Shaun Ewing Jul 12, 1932 00:00
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US-1867380-A // Thermal switch // Runyon Benjamin F. // Bell Telephone Labor Inc
PDF File 1868090.pdf 337 kB Shaun Ewing Jul 19, 1932 00:00
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US-1868090-A // Sound translating device // Bostwick Lee G. // Bell Telephone Labor Inc
PDF File 1868296.pdf 1.79 MB Shaun Ewing Jul 19, 1932 00:00
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US-1868296-A // Automatic telephone system // Stokely Ray L. // Bell Telephone Labor Inc
PDF File 1868309.pdf 1.76 MB Shaun Ewing Jul 19, 1932 00:00
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US-1868309-A // Telephone system // Carpenter Warren W. ; Dahl Jack F. // Bell Telephone Labor Inc
PDF File 1868315.pdf 318 kB Shaun Ewing Jul 19, 1932 00:00
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US-1868315-A // Continuously loaded conductor // Ellis William C. // Bell Telephone Labor Inc
PDF File 1868318.pdf 193 kB Shaun Ewing Jul 19, 1932 00:00
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US-1868318-A // Adjustable inductance // Greenidge Ralph M. C. // Bell Telephone Labor Inc
PDF File 1868321.pdf 430 kB Shaun Ewing Jul 19, 1932 00:00
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US-1868321-A // Sound recording // Harrison Henry C. // Bell Telephone Labor Inc
PDF File 1868326.pdf 1.59 MB Shaun Ewing Jul 19, 1932 00:00
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US-1868326-A // Telephone system // King Gerald V. // Bell Telephone Labor Inc
PDF File 1868366.pdf 649 kB Shaun Ewing Jul 19, 1932 00:00
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US-1868366-A // Driving mechanism // Pfannenstiehl Harry // Bell Telephone Labor Inc
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