2680189

Information

• Patent Grant
• 2680189

• References
• Source

• Patent Number

  2,680,189

• Date Filed

  Not available

• Date Issued

  Tuesday, June 1, 1954
  70 years ago

• CPC

  • G05D23/27539 - using conductible expansible fluid

• US Classifications

  • 219 - Electric heating
  • 126 - Stoves and furnaces
  • 236 - Automatic temperature and humidity regulation
  • 237 - Heating systems