422070

Information

• Patent Grant
• 422070

• References
• Source

• Patent Number

  422,070

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1890
  134 years ago

• CPC

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

• US Classifications

  • 122 - Liquid heaters and vaporizers