1893771

Information

• Patent Grant
• 1893771

• References
• Source

• Patent Number

  1,893,771

• Date Filed

  Not available

• Date Issued

  Tuesday, January 10, 1933
  92 years ago

• CPC

  • H02P9/20 - due to variation of continuously-variable ohmic resistance

• US Classifications

  • 322 - Electricity: single generator systems
  • 330 - Amplifiers
  • 363 - Electric power conversion systems