1974639

Information

• Patent Grant
• 1974639

• References
• Source

• Patent Number

  1,974,639

• Date Filed

  Not available

• Date Issued

  Tuesday, September 25, 1934
  90 years ago

• CPC

  • B60H1/00485 - Valves for air-conditioning devices
  • Y10S165/126 - Total flow rate through heat exchanger controlled by valve

• US Classifications

  • 165 - Heat exchange
  • 237 - Heating systems
  • 251 - Valves and valve actuation