581212

Information

• Patent Grant
• 581212

• References
• Source

• Patent Number

  581,212

• Date Filed

  Not available

• Date Issued

  Tuesday, April 20, 1897
  127 years ago

• CPC

  • F22B5/02 - with auxiliary water tubes outside the boiler body

• US Classifications

  • 122 - Liquid heaters and vaporizers