239923

Information

• Patent Grant
• 239923

• References
• Source

• Patent Number

  239,923

• Date Filed

  Not available

• Date Issued

  Tuesday, April 12, 1881
  144 years ago

• CPC

  • F23B1/24 - using rotating grate

• US Classifications

  • 122 - Liquid heaters and vaporizers
  • 110 - Furnaces