1384581

Information

• Patent Grant
• 1384581

• References
• Source

• Patent Number

  1,384,581

• Date Filed

  Not available

• Date Issued

  Tuesday, July 12, 1921
  103 years ago

• CPC

  • F22B37/165 - Closures for access openings in return bends

• US Classifications

  • 122 - Liquid heaters and vaporizers