1663640

Information

• Patent Grant
• 1663640

• References
• Source

• Patent Number

  1,663,640

• Date Filed

  Not available

• Date Issued

  Tuesday, March 27, 1928
  96 years ago

• CPC

  • F24B1/24 - with built-in masses for heat storage or heat insulation

• US Classifications

  • 165 - Heat exchange
  • 126 - Stoves and furnaces
  • 219 - Electric heating