2558643

Information

• Patent Grant
• 2558643

• References
• Source

• Patent Number

  2,558,643

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1951
  73 years ago

• CPC

  • H02J7/20 - due to variation of continuously variable ohmic resistor

• US Classifications

  • 322 - Electricity: single generator systems