3408990

Information

• Patent Grant
• 3408990

• References
• Source

• Patent Number

  3,408,990

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1968
  56 years ago

• CPC

  • F22B21/12 - involving two or more upper drums and two or more lower drums

• US Classifications

  • 122 - Liquid heaters and vaporizers