2920874

Information

• Patent Grant
• 2920874

• References
• Source

• Patent Number

  2,920,874

• Date Filed

  Not available

• Date Issued

  Tuesday, January 12, 1960
  65 years ago

• CPC

  • F22D1/02 - with water tubes arranged in the boiler furnace, fire tubes, or flue ways
  • F22B21/30 - bent in U-loop form
  • F22G7/14 - in water-tube boilers

• US Classifications

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