1382220

Information

• Patent Grant
• 1382220

• References
• Source

• Patent Number

  1,382,220

• Date Filed

  Not available

• Date Issued

  Tuesday, June 21, 1921
  103 years ago

• CPC

  • F22B37/101 - Tubes having fins or ribs

• US Classifications

  • 165 - Heat exchange
  • 122 - Liquid heaters and vaporizers