1425674

Information

• Patent Grant
• 1425674

• References
• Source

• Patent Number

  1,425,674

• Date Filed

  Not available

• Date Issued

  Tuesday, August 15, 1922
  101 years ago

• CPC

  • F28D21/0008 - Air heaters
  • Y10S165/129 - Valve regulates flow through housing enclosing heat exchanger

• US Classifications

  • 165 - Heat exchange
  • 237 - Heating systems