Name Size Creator Creation Date Labels Comment  
PDF File 1958635.pdf 14.52 MB Shaun Ewing May 15, 1934 00:00
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US-1958635-A // Sender testing system // Myers Oscar // Bell Telephone Labor Inc
PDF File 1958626.pdf 809 kB Shaun Ewing May 15, 1934 00:00
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US-1958626-A // Reeling device // Krantz Hubert K. // Bell Telephone Labor Inc
PDF File 1958620.pdf 965 kB Shaun Ewing May 15, 1934 00:00
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US-1958620-A // Piezo-electric crystals having low temperature coefficients of frequency // Heising Raymond A. // Bell Telephone Labor Inc
PDF File 1958616.pdf 347 kB Shaun Ewing May 15, 1934 00:00
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US-1958616-A // Phonograph recording machine // Gent Edgar W. // Bell Telephone Labor Inc
PDF File 1958612.pdf 463 kB Shaun Ewing May 15, 1934 00:00
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US-1958612-A // Photographic process // Dawson Wilfrid L. // Bell Telephone Labor Inc
PDF File 1958611.pdf 836 kB Shaun Ewing May 15, 1934 00:00
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US-1958611-A // Method of and system for testing signaling lines // Curtis Austen M. // Bell Telephone Labor Inc
PDF File 1958598.pdf 288 kB Shaun Ewing May 15, 1934 00:00
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US-1958598-A // Machine for preshaping and applying tapes // Trebes Bruno M. A. // Bell Telephone Labor Inc
PDF File 1958596.pdf 975 kB Shaun Ewing May 15, 1934 00:00
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US-1958596-A // Control system // Stoller Hugh M. // Bell Telephone Labor Inc
PDF File 1957953.pdf 379 kB Shaun Ewing May 08, 1934 00:00
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US-1957953-A // Electrooptical system // Gray Frank // Bell Telephone Labor Inc
PDF File 1957565.pdf 389 kB Shaun Ewing May 08, 1934 00:00
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US-1957565-A // Alarm system // Wheeler Clyde H. // Bell Telephone Labor Inc
PDF File 1957538.pdf 401 kB Shaun Ewing May 08, 1934 00:00
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US-1957538-A // Electrical network // Jensen Axel G. // Bell Telephone Labor Inc
PDF File 1957519.pdf 299 kB Shaun Ewing May 08, 1934 00:00
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US-1957519-A // Multiple radio receiving system // Aiken Charles B. // Bell Telephone Labor Inc
PDF File 1957502.pdf 2.16 MB Shaun Ewing May 08, 1934 00:00
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US-1957502-A // Multiplex telegraph system // Locke George A. // Bell Telephone Labor Inc
PDF File 1957487.pdf 425 kB Shaun Ewing May 08, 1934 00:00
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US-1957487-A // Multicore cable with thermoplastic insulation // Buckley Oliver E. ; Malm Frank S. // Bell Telephone Labor Inc
PDF File 1957486.pdf 235 kB Shaun Ewing May 08, 1934 00:00
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US-1957486-A // Electron emitter // Becker Joseph A. // Bell Telephone Labor Inc
PDF File 1956744.pdf 475 kB Shaun Ewing May 01, 1934 00:00
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US-1956744-A // Fire extinguisher // Melick John M. // Bell Telephone Labor Inc
PDF File 1956715.pdf 443 kB Shaun Ewing May 01, 1934 00:00
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US-1956715-A // Correction for changes in line transmission // Green Charles W. // Bell Telephone Labor Inc
PDF File 1956709.pdf 678 kB Shaun Ewing May 01, 1934 00:00
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US-1956709-A // Calling circuit // Cooke Leighton B. // Bell Telephone Labor Inc
PDF File 1956550.pdf 338 kB Shaun Ewing May 01, 1934 00:00
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US-1956550-A // Incandescent lamp system // Dawson Wilfrid L. // Bell Telephone Labor Inc
PDF File 1956547.pdf 1.10 MB Shaun Ewing May 01, 1934 00:00
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US-1956547-A // Repeatered transmission system // Black Harold S. // Bell Telephone Labor Inc
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