1643451

Information

• Patent Grant
• 1643451

• References
• Source

• Patent Number

  1,643,451

• Date Filed

  Not available

• Date Issued

  Tuesday, September 27, 1927
  97 years ago

• CPC

  • F24D19/0012 - Comprising regulation means
  • G05D23/024 - the sensing element being of the rod type, tube type, or of a similar type

• US Classifications

  • 236 - Automatic temperature and humidity regulation
  • 237 - Heating systems
  • 251 - Valves and valve actuation