1989278

Information

• Patent Grant
• 1989278

• References
• Source

• Patent Number

  1,989,278

• Date Filed

  Not available

• Date Issued

  Tuesday, January 29, 1935
  90 years ago

• CPC

  • F24H9/2092 - for heaters using solid combustibles

• US Classifications

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