2291872

Information

• Patent Grant
• 2291872

• References
• Source

• Patent Number

  2,291,872

• Date Filed

  Not available

• Date Issued

  Tuesday, August 4, 1942
  82 years ago

• CPC

  • F22B13/023 - with auxiliary water tubes inside the fire-box

• US Classifications

  • 122 - Liquid heaters and vaporizers
  • 236 - Automatic temperature and humidity regulation