1881225

Information

• Patent Grant
• 1881225

• References
• Source

• Patent Number

  1,881,225

• Date Filed

  Not available

• Date Issued

  Tuesday, October 4, 1932
  92 years ago

• CPC

  • F22B13/12 - the auxiliary water tubes lining the fire-box

• US Classifications

  • 122 - Liquid heaters and vaporizers