1618792

Information

• Patent Grant
• 1618792

• References
• Source

• Patent Number

  1,618,792

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1927
  97 years ago

• CPC

  • G05D23/015 - with mechanical sensing element not covered by groups G05D23/02 and G05D23/12

• US Classifications

  • 236 - Automatic temperature and humidity regulation
  • 454 - Ventilation