Name Size Creator Creation Date Labels Comment  
PDF File 2100390.pdf 1.15 MB Shaun Ewing Nov 30, 1937 00:00
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US-2100390-A // Call transmitter // Goff Harold W. // Bell Telephone Labor Inc
PDF File 2100375.pdf 728 kB Shaun Ewing Nov 30, 1937 00:00
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US-2100375-A // Gain control // Blair Royer R. // Bell Telephone Labor Inc
PDF File 2100367.pdf 621 kB Shaun Ewing Nov 30, 1937 00:00
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US-2100367-A // Electric discharge device // Ward Frank E. // Bell Telephone Labor Inc
PDF File 2099889.pdf 778 kB Shaun Ewing Nov 23, 1937 00:00
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US-2099889-A // Television system // Ives Herbert E. // Bell Telephone Labor Inc
PDF File 2099865.pdf 513 kB Shaun Ewing Nov 23, 1937 00:00
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US-2099865-A // Sound picture system // Morton Edmund R. // Bell Telephone Labor Inc
PDF File 2099143.pdf 2.27 MB Shaun Ewing Nov 16, 1937 00:00
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US-2099143-A // Call transmitter device // Roberts John G. ; Richard Charles D. // Bell Telephone Labor Inc
PDF File 2099117.pdf 755 kB Shaun Ewing Nov 16, 1937 00:00
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US-2099117-A // Terminal mounting // Kelsay Le Roy W. // Bell Telephone Labor Inc
PDF File 2099115.pdf 1.72 MB Shaun Ewing Nov 16, 1937 00:00
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US-2099115-A // Communication system // Ives Herbert E. // Bell Telephone Labor Inc
PDF File 2099111.pdf 556 kB Shaun Ewing Nov 16, 1937 00:00
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US-2099111-A // Gaseous discharge device // Hefele John R. // Bell Telephone Labor Inc
PDF File 2098968.pdf 811 kB Shaun Ewing Nov 16, 1937 00:00
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US-2098968-A // Transmission regulation // Mallinckrodt Charles O. // Bell Telephone Labor Inc
PDF File 2098956.pdf 3.95 MB Shaun Ewing Nov 16, 1937 00:00
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US-2098956-A // Signaling system // Dudley Homer W. // Bell Telephone Labor Inc
PDF File 2098950.pdf 775 kB Shaun Ewing Nov 16, 1937 00:00
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US-2098950-A // Vacuum tube circuit // Black Harold S. // Bell Telephone Labor Inc
PDF File 2098326.pdf 399 kB Shaun Ewing Nov 09, 1937 00:00
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US-2098326-A // Calculating device // Wente Edward C. // Bell Telephone Labor Inc
PDF File 2098321.pdf 1.76 MB Shaun Ewing Nov 09, 1937 00:00
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US-2098321-A // Distributing frame // Treptow Frederick W. // Bell Telephone Labor Inc
PDF File 2098310.pdf 563 kB Shaun Ewing Nov 09, 1937 00:00
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US-2098310-A // Circuit for space discharge devices // Jr. George H. Rockwood, // Bell Telephone Labor Inc
PDF File 2098301.pdf 388 kB Shaun Ewing Nov 09, 1937 00:00
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US-2098301-A // Glow discharge device // Mendenhall Hallam E. // Bell Telephone Labor Inc
PDF File 2098300.pdf 305 kB Shaun Ewing Nov 09, 1937 00:00
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US-2098300-A // Electric welding // May David T. // Bell Telephone Labor Inc
PDF File 2098291.pdf 563 kB Shaun Ewing Nov 09, 1937 00:00
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US-2098291-A // Sound translating apparatus // Hopkins Harris F. // Bell Telephone Labor Inc
PDF File 2098287.pdf 664 kB Shaun Ewing Nov 09, 1937 00:00
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US-2098287-A // System of indicating distance // Gent Edgar W. // Bell Telephone Labor Inc
PDF File 2098286.pdf 1.18 MB Shaun Ewing Nov 09, 1937 00:00
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US-2098286-A // Transmission control in signaling systems // Garfield Owen R. // Bell Telephone Labor Inc
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