24, 1881
251,538 Electric Light . . . . . . . . . . . . May 27, 1881
425,760 Measurement of Electricity in Distribution
System . . . . . . . . . . . . . . . .May 3 1, 1881
251,547 Electrical Governor. . . . . . . . . . June 2, 1881
263,150 Magneto or Dynamo Electric Machines. June 3, 1881
263,131 Magnetic Ore Separator . . . . . . . . June 4, 1881
435,687 Means for Charging and Using Secondary
Batteries. . . . . . . . . . . . . . .June 21, 1881
263,143 Magneto or Dynamo Electric Machines. .June 24, 1881
251,537 Dynamo Electric Machine. . . . . . . .June 25, 1881
263,147 Vacuum Apparatus . . . . . . . . . . .July 1, 188 1
439,389 Electric Lighting System . . . . . . . July 1, 1881
263,149 Commutator for Dynamo or Magneto
Electric Machines. . . . . . . . . . .July 22, 1881
479,184 Facsimile Telegraph--Edison and Kenny.July 26, 1881
400,317 Ore Separator. . . . . . . . . . . . .Aug. 11, 1881
425,763 Commutator for Dynamo Electric
Machines . . . . . . . . . . . . . . .Aug. 20, 1881
263,133 Dynamo or Magneto Electric Machine . .Aug. 24, 1881
263,142 Electrical Distribution System . . . .Aug. 24, 1881
264,647 Dynamo or Magneto Electric Machines. .Aug. 24, 1881
404,902 Electrical Distribution System . . . .Aug. 24, 1881
257,677 Telephone. . . . . . . . . . . . . . .Sept. 7, 1881
266,021 Telephone. . . . . . . . . . . . . . .Sept. 7, 1881
263,144 Mold for Carbonizing Incandescents . Sept. 19, 1881
265,774 Maintaining Temperatures in
Webermeters. . . . . . . . . . . . . Sept. 21, 1881
264,648 Dynamo or Magneto Electric Machines. Sept. 23, 1881
265,776 Electric Lighting System . . . . . . Sept. 27, 1881
524,136 Regulator for Dynamo Electrical
Machines . . . . . . . . . . . . . . Sept. 27, 1881
273,715 Malleableizing Iron. . . . . . . . . . Oct. 4, 1881
281,352 Webermeter . . . . . . . . . . . . . . Oct. 5, 1881
446,667 Locomotives for Electric Railways. . .Oct. 11, 1881
288,318 Regulator for Dynamo or Magneto
Electric Machines. . . . . . . . . . .Oct. 17, 1881
263,148 Dynamo or Magneto Electric Machines. Oct. 25, 1881
264,646 Dynamo or Magneto Electric Machines. Oct. 25, 1881
251,559 Electrical Drop Ligh