1908012

Information

• Patent Grant
• 1908012

• References
• Source

• Patent Number

  1,908,012

• Date Filed

  Not available

• Date Issued

  Tuesday, May 9, 1933
  91 years ago

• CPC

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

• US Classifications

  • 320 - Electricity: battery or capacitor charging or discharging
  • 307 - Electrical transmission or interconnection systems