1902303

Information

• Patent Grant
• 1902303

• References
• Source

• Patent Number

  1,902,303

• Date Filed

  Not available

• Date Issued

  Tuesday, March 21, 1933
  91 years ago

• CPC

  • F24D19/1075 - the system uses solar energy
  • F23N5/025 - using electrical or electromechanical means

• US Classifications

  • 236 - Automatic temperature and humidity regulation
  • 237 - Heating systems