2250139

Information

• Patent Grant
• 2250139

• References
• Source

• Patent Number

  2,250,139

• Date Filed

  Not available

• Date Issued

  Tuesday, July 22, 1941
  83 years ago

• CPC

  • F24H3/06 - the air being kept separate from the heating medium
  • F24H9/2092 - for heaters using solid combustibles

• US Classifications

  • 126 - Stoves and furnaces
  • 236 - Automatic temperature and humidity regulation