2213894

Information

• Patent Grant
• 2213894

• References
• Source

• Patent Number

  2,213,894

• Date Filed

  Not available

• Date Issued

  Tuesday, September 3, 1940
  84 years ago

• CPC

  • F24J2/246 - the conduits being helically coiled
  • Y02E10/44 - Heat exchange systems

• US Classifications

  • 126 - Stoves and furnaces
  • 203 - Distillation: processes, separatory