1696417

Information

• Patent Grant
• 1696417

• References
• Source

• Patent Number

  1,696,417

• Date Filed

  Not available

• Date Issued

  Tuesday, December 25, 1928
  97 years ago

• CPC

  • H02P9/16 - due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step

• US Classifications

  • 323 - Electricity: power supply or regulation systems