1380536

Information

• Patent Grant
• 1380536

• References
• Source

• Patent Number

  1,380,536

• Date Filed

  Not available

• Date Issued

  Tuesday, June 7, 1921
  103 years ago

• CPC

  • F22B13/026 - the tubes being in substantially horizontal arrangement
  • F23B2700/01 - adapted for boilers built up from sections

• US Classifications

  • 122 - Liquid heaters and vaporizers