2151988

Information

• Patent Grant
• 2151988

• References
• Source

• Patent Number

  2,151,988

• Date Filed

  Not available

• Date Issued

  Tuesday, March 28, 1939
  86 years ago

• CPC

  • F22B21/22 - built-up from water tubes of form other than straight or substantially straight

• US Classifications

  • 122 - Liquid heaters and vaporizers