1804939

Information

• Patent Grant
• 1804939

• References
• Source

• Patent Number

  1,804,939

• Date Filed

  Not available

• Date Issued

  Tuesday, May 12, 1931
  93 years ago

• CPC

  • F22D1/06 - in horizontal arrangement
  • Y10S165/437 - Coiled

• US Classifications

  • 165 - Heat exchange
  • 122 - Liquid heaters and vaporizers