2297389

Information

• Patent Grant
• 2297389

• References
• Source

• Patent Number

  2,297,389

• Date Filed

  Not available

• Date Issued

  Tuesday, September 29, 1942
  82 years ago

• CPC

  • H01H3/40 - using friction, toothed, or screw-and-nut gearing
  • H01H3/44 - using Geneva movement
  • Y10T74/20498 - Variable ratio

• US Classifications

  • 334 - Tuners
  • 074 - Machine element or mechanism
  • 200 - Electricity: circuit makers and breakers
  • 336 - Inductor devices