1388025

Information

• Patent Grant
• 1388025

• References
• Source

• Patent Number

  1,388,025

• Date Filed

  Not available

• Date Issued

  Tuesday, August 16, 1921
  103 years ago

• CPC

  • F22B7/20 - Furnace tubes

• US Classifications

  • 122 - Liquid heaters and vaporizers