418187

Information

• Patent Grant
• 418187

• References
• Source

• Patent Number

  418,187

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1889
  135 years ago

• CPC

  • F22B7/00 - Steam boilers of furnace-tube type
  • Y10S122/06 - Damper-directed radiation

• US Classifications

  • 122 - Liquid heaters and vaporizers
  • 110 - Furnaces