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Black History Month - African American Inventors

Patent Holders List Index W

By Mary Bellis, About.com

Kevin Woolfolk

Kevin Woolfolk

Kevin Woolfolk

V < Wade to Webster, Weir to Winn, Winters to Wormley > XYZ

Joseph R Winters

  • #203,517, 5/7/1878, Fire escape ladder
  • #214,224, 4/8/1879, Improvement in fire escape ladders

Francis J Wood

  • #537,953, 4/23/1895, Potato digger

Dudley G Woodard

  • #3,574,175, 4/6/1971, Preparation of water soluble acrylic copolymers for use in water treatment

Granville T Woods

  • #299,894, 6/3/1884, Steam boiler furnace
  • #308,817, 12/2/1884, Telephone transmitter
  • #315,368, 4/7/1885, Apparatus for transmissions of messages by electricity
  • #364,619, 6/7/1887, Relay instrument
  • #366,192, 7/5/1887, Polarized relay
  • #368,265, 8/16/1887, Electromechanical brake
  • #371,241, 10/11/1887, Telephone system and apparatus
  • #371,655, 10/18/1887, Electromagnetic brake apparatus
  • #373,383, 11/5/1887, Railway telegraphy
  • #373,915, 11/29/1887, Induction telegraph system
  • #383,844, 5/29/1888, Overhead conducting system for electric railways
  • #385,034, 6/26/1888, Electromotive railway
  • #386,282, 7/17/1888, Tunnel construction for electric railways
  • #387,839, 8/14/1888, Galvanic battery
  • #388,803, 8/28/1888, Railway telegraphy
  • #395,533, 1/1/1889, Automatic safety cut-out for electric circuits
  • #463,020, 11/10/1891, Electric railway system
  • #507,606, 10/31/1893, Electric railwaysupply system
  • #639,692, 12/19/1899, Amusement apparatus
  • #656,760, 8/28/1900, Incubator
  • #662,049, 11/20/1900, Automatic circuit-breaking apparatus
  • #681,768, 9/3/1901, Regulating and controlling electrical translating devices
  • #690,809, 1/7/1902, Apparatus for controlling electric motors or other electrical translating devices
  • #695,988, 3/25/1902, Electric railway
  • #701,981, 6/10/1902, Automatic air brake
  • #718,183, 1/13/1903, Electric railway system
  • #762,792, 6/14/1904, Electric-railway apparatus

Kevin Woolfolk

  • #5,649,503, 7/22/1997, Squirrel cage having a cyclometer and method for monitoring the activity of an animal

James Wormley

  • #242,091, 5/24/1881, Lifesaving apparatus

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