3052220

Information

• Patent Grant
• 3052220

• References
• Source

• Patent Number

  3,052,220

• Date Filed

  Not available

• Date Issued

  Tuesday, September 4, 1962
  62 years ago

• CPC

  • F22B21/065 - involving an upper and lower drum of annular shape
  • F22B9/04 - the fire tubes being in upright arrangement
  • F22B21/06 - the water tubes being arranged annularly in sets

• US Classifications

  • 122 - Liquid heaters and vaporizers