3842821

Information

• Patent Grant
• 3842821

• References
• Source

• Patent Number

  3,842,821

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1974
  50 years ago

• CPC

  • F24B1/1802 - adapted for the use of both solid fuel and another type of fuel or energy supply

• US Classifications

  • 126 - Stoves and furnaces
  • 392 - Electric resistance heating devices