Name Size Creator Creation Date Labels Comment  
PDF File 2025389.pdf 3.36 MB Shaun Ewing Dec 24, 1935 00:00
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US-2025389-A // Telephone system // Hovland Henry // Bell Telephone Labor Inc
PDF File 2025390.pdf 312 kB Shaun Ewing Dec 24, 1935 00:00
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US-2025390-A // Telephone pay station equipment // Hoyt Frederick A. // Bell Telephone Labor Inc
PDF File 2025400.pdf 627 kB Shaun Ewing Dec 24, 1935 00:00
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US-2025400-A // Volume control circuits // Ring Douglas H. // Bell Telephone Labor Inc
PDF File 2025407.pdf 727 kB Shaun Ewing Dec 24, 1935 00:00
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US-2025407-A // Electrical recorder // Williams Samuel B. // Bell Telephone Labor Inc
PDF File 2026298.pdf 395 kB Shaun Ewing Dec 31, 1935 00:00
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US-2026298-A // Revolving chair // Bouman Bernhard M. // Bell Telephone Labor Inc
PDF File 2026303.pdf 1.02 MB Shaun Ewing Dec 31, 1935 00:00
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US-2026303-A // Connecting device // Curran Stanley T. // Bell Telephone Labor Inc
PDF File 2026305.pdf 1.02 MB Shaun Ewing Dec 31, 1935 00:00
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US-2026305-A // Transmission control in signaling systems // Fisher Harold J. // Bell Telephone Labor Inc
PDF File 2026308.pdf 264 kB Shaun Ewing Dec 31, 1935 00:00
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US-2026308-A // Balanced inductance device // Ganz Albert G. // Bell Telephone Labor Inc
PDF File 2026316.pdf 249 kB Shaun Ewing Dec 31, 1935 00:00
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US-2026316-A // Impregnation of insulating materials // Kohman Girard T. // Bell Telephone Labor Inc
PDF File 2026319.pdf 239 kB Shaun Ewing Dec 31, 1935 00:00
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US-2026319-A // Amplifier // Murphy Orlando J. // Bell Telephone Labor Inc
PDF File 2027142.pdf 1.71 MB Shaun Ewing Jan 07, 1936 00:00
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US-2027142-A // Telephone exchange system // Allison Sewell W. ; Mckim James B. // Bell Telephone Labor Inc
PDF File 2027168.pdf 367 kB Shaun Ewing Jan 07, 1936 00:00
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US-2027168-A // Vibration translating device // Harrison Henry C. // Bell Telephone Labor Inc
PDF File 2027169.pdf 357 kB Shaun Ewing Jan 07, 1936 00:00
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US-2027169-A // Vibration translating device // Harrison Henry C. // Bell Telephone Labor Inc
PDF File 2027180.pdf 675 kB Shaun Ewing Jan 07, 1936 00:00
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US-2027180-A // Electron discharge device // Laico Joseph P. // Bell Telephone Labor Inc
PDF File 2027181.pdf 682 kB Shaun Ewing Jan 07, 1936 00:00
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US-2027181-A // Sealing-in machine // Laico Joseph P. // Bell Telephone Labor Inc
PDF File 2027194.pdf 1.01 MB Shaun Ewing Jan 07, 1936 00:00
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US-2027194-A // Telephone system // Myers Oscar // Bell Telephone Labor Inc
PDF File 2027197.pdf 1.53 MB Shaun Ewing Jan 07, 1936 00:00
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US-2027197-A // Trunk circuit // Powell Albert C. // Bell Telephone Labor Inc
PDF File 2027207.pdf 666 kB Shaun Ewing Jan 07, 1936 00:00
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US-2027207-A // Sound picture apparatus // Smythe Edwin H. // Bell Telephone Labor Inc
PDF File 2028171.pdf 735 kB Shaun Ewing Jan 21, 1936 00:00
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US-2028171-A // Lock // Shann Oscar A. // Bell Telephone Labor Inc
PDF File 2028180.pdf 215 kB Shaun Ewing Jan 21, 1936 00:00
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US-2028180-A // Acoustic materials // Arnold Harold D. // Bell Telephone Labor Inc
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