3686558

Information

• Patent Grant
• 3686558

• References
• Source

• Patent Number

  3,686,558

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1972
  52 years ago

• CPC

  • H02M5/273 - with digital control

• US Classifications

  • 219 - Electric heating
  • 363 - Electric power conversion systems