674939

Information

• Patent Grant
• 674939

• References
• Source

• Patent Number

  674,939

• Date Filed

  Not available

• Date Issued

  Tuesday, May 28, 1901
  124 years ago

• CPC

  • F22B17/105 - with tubes in series flow arrangement
  • Y10S122/01 - Air heater

• US Classifications

  • 122 - Liquid heaters and vaporizers
  • 110 - Furnaces