3868927

Information

• Patent Grant
• 3868927

• References
• Source

• Patent Number

  3,868,927

• Date Filed

  Not available

• Date Issued

  Tuesday, March 4, 1975
  49 years ago

• CPC

  • F22B29/065 - involving upper vertically disposed water tubes and lower horizontally- or helically disposed water tubes
  • F22B37/40 - Arrangements of partition walls in flues of steam boilers

• US Classifications

  • 122 - Liquid heaters and vaporizers