Automatic Determining Device for
Phonographs. . . . . . . . . . . . . .June 15, 1889
430,279 Voltaic Battery. . . . . . . . . . . .June 15, 1889
506,216 Apparatus for Making Glass . . . . . .June 29, 1889
414,761 Phonogram Blanks . . . . . . . . . . .July 16, 1889
430,280 Magnetic Separator . . . . . . . . . .July 20, 1889
437,426 Phonograph . . . . . . . . . . . . . .July 20, 1889
465,972 Phonograph . . . . . . . . . . . . . .Nov. 14, 1889
443,507 Phonograph . . . . . . . . . . . . . . Dec. 11 1889
513,095 Phonograph . . . . . . . . . . . . . . Dec. 11 1889

1890

434,588 Magnetic Ore Separator--Edison and
W. K. L. Dickson . . . . . . . . . . .Jan. 16, 1890
437,427 Making Phonogram Blanks. . . . . . . . Feb. 8, 1890
465,250 Extracting Copper Pyrites. . . . . . . Feb. 8, 1890
434,589 Propelling Mechanism for Electric Vehicles Feb. 14, 1890
438,310 Lamp Base. . . . . . . . . . . . . . April 25, 1890
437,428 Propelling Device for Electric Cars. April 29, 1890
437,429 Phonogram Blank. . . . . . . . . . . April 29, 1890
454,941 Phonograph Recorder and Reproducer . . .May 6, 1890
436,127 Electric Motor . . . . . . . . . . . . May 17, 1890
484,583 Phonograph Cutting Tool. . . . . . . . May 24, 1890
484,584 Phonograph Reproducer. . . . . . . . . May 24, 1890
436,970 Apparatus for Transmitting Power . . . June 2, 1890
453,741 Phonograph . . . . . . . . . . . . . . July 5, 1890
454,942 Phonograph . . . . . . . . . . . . . . July 5, 1890
456,301 Phonograph Doll. . . . . . . . . . . . July 5, 1890
484,585 Phonograph . . . . . . . . . . . . . . July 5, 1890
456,302 Phonograph . . . . . . . . . . . . . . Aug. 4, 1890
476,984 Expansible Pulley. . . . . . . . . . . Aug. 9, 1890
493,858 Transmission of Power. . . . . . . . . Aug. 9, 1890
457,343 Magnetic Belting . . . . . . . . . . .Sept. 6, 1890
444,530 Leading-in Wires for Incandescent Electric
Lamps (reissued October 10, 1905,
No. 12,393). . . . . . . . . . . . . Sept. 12, 1890
534 209 Incandescent Electric Lamp . . . . . Sept. 13, 1890
476 985 Trolley for Electric Railways. . . . .Oct. 27, 1890
500,280 Phonograph . . . . . . . . . . . . . .Oct. 27, 1890
541,923 Phonograph . . . . . . .