Name Size Creator Creation Date Labels Comment  
PDF File 1333111.pdf 262 kB Shaun Ewing Mar 09, 1920 00:00
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US-1333111-A // Impedance-equalizer for use with transformers // Hoyt Ray S. // American Telephone ; Telegraph Company
PDF File 1228167.pdf 262 kB Shaun Ewing May 29, 1917 00:00
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US-1228167-A // Auxiliary-supervisory-signal system. // Henry M. Bascom // American Telephone & Telegraph
PDF File 1262912.pdf 261 kB Shaun Ewing Apr 16, 1918 00:00
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US-1262912-A // Means for preventing disturbances in substation telephone sets. // Henry M. Bascom // American Telephone & Telegraph
PDF File 1200822.pdf 261 kB Shaun Ewing Oct 10, 1916 00:00
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US-1200822-A // Governing device for escapement mechanism. // John Erickson // American Telephone Fire Alarm Company
PDF File 831131.pdf 260 kB Shaun Ewing Sept 18, 1906 00:00
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US-831131-A // Multiconductor-cable. // Walter C. Yeatman // American Telephone & Telegraph
PDF File 371557.pdf 260 kB Shaun Ewing Oct 18, 1887 00:00
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US-371557-A // Means for preventing induction on electrical conductors // Stephen C. Drew, Of Massachusetts // American Telephone & Telegraph, Maine
PDF File 1100018.pdf 258 kB Shaun Ewing Jun 16, 1914 00:00
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US-1100018-A // Case for loading coils. // Frank B. Jewett ; Thomas Shaw // American Telephone & Telegraph
PDF File 931231.pdf 257 kB Shaun Ewing Aug 17, 1909 00:00
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US-931231-A // Mounting for telephone instruments. // Herbert E. Shreeve // American Telephone & Telegraph
PDF File 1227735.pdf 256 kB Shaun Ewing May 29, 1917 00:00
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US-1227735-A // System for connecting telephone-stations. // Leon D. Barrows ; Harry P. Charlesworth // American Telephone & Telegraph
PDF File 1245894.pdf 255 kB Shaun Ewing Nov 06, 1917 00:00
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US-1245894-A // Telegraphic receiving system. // John M. Fell // American Telephone & Telegraph
PDF File 737704.pdf 254 kB Shaun Ewing Sept 01, 1903 00:00
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US-737704-A // Self-induction coil. // George A. Campbell ; Wilton L. Richards // American Telephone & Telegraph
PDF File 1093001.pdf 249 kB Shaun Ewing Apr 14, 1914 00:00
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US-1093001-A // Telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1351845.pdf 242 kB Shaun Ewing Sept 07, 1920 00:00
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US-1351845-A // Anchoring device // Fish Lewin Benjamin // American Telephone & Telegraph
PDF File 855395.pdf 240 kB Shaun Ewing May 28, 1907 00:00
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US-855395-A // Telephone-transmitter. // Oscar F. Falk // American Telephone & Telegraph
PDF File 1334674.pdf 231 kB Shaun Ewing Mar 23, 1920 00:00
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US-1334674-A // Ratchet-screwdriver // Jr. Alphonse Pannitti, // American Telephone ; Telegraph Company
PDF File 737703.pdf 230 kB Shaun Ewing Sept 01, 1903 00:00
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US-737703-A // Self-induction coil. // George A. Campbell // American Telephone & Telegraph
PDF File 1222771.pdf 229 kB Shaun Ewing Apr 17, 1917 00:00
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US-1222771-A // Telegraphic receiving organisms. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1332927.pdf 226 kB Shaun Ewing Mar 09, 1920 00:00
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US-1332927-A // Reeling device // Smith Temple C. // American Telephone ; Telegraph Company
PDF File 1357264.pdf 220 kB Shaun Ewing Nov 02, 1920 00:00
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US-1357264-A // Magnetic modulator // Dyke Karl S. Van // American Telephone & Telegraph
PDF File 1103073.pdf 217 kB Shaun Ewing Jul 14, 1914 00:00
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US-1103073-A // Emergency signaling system for telephone toll-collecting apparatus. // Joseph J. O'Connell // American Telephone & Telegraph
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