1381481

Information

• Patent Grant
• 1381481

• References
• Source

• Patent Number

  1,381,481

• Date Filed

  Not available

• Date Issued

  Tuesday, June 14, 1921
  103 years ago

• CPC

  • F22B27/04 - built-up from water tubes

• US Classifications

  • 122 - Liquid heaters and vaporizers