1813139

Information

• Patent Grant
• 1813139

• References
• Source

• Patent Number

  1,813,139

• Date Filed

  Not available

• Date Issued

  Tuesday, July 7, 1931
  93 years ago

• CPC

  • B60L5/14 - Devices for automatic lowering of a jumped-off collector

• US Classifications

  • 191 - Electricity: transmission to vehicles