1742091

Information

• Patent Grant
• 1742091

• References
• Source

• Patent Number

  1,742,091

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1929
  96 years ago

• CPC

  • G05D23/275 - with sensing element expanding, contracting, or fusing in response to changes of temperature
  • G05D23/1921 - using a thermal motor
  • Y10S236/16 - Relief spring

• US Classifications

  • 236 - Automatic temperature and humidity regulation