2221041

Information

• Patent Grant
• 2221041

• References
• Source

• Patent Number

  2,221,041

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1940
  84 years ago

• CPC

  • F24H9/2092 - for heaters using solid combustibles

• US Classifications

  • 236 - Automatic temperature and humidity regulation