1328540

Information

• Patent Grant
• 1328540

• References
• Source

• Patent Number

  1,328,540

• Date Filed

  Not available

• Date Issued

  Tuesday, January 20, 1920
  105 years ago

• CPC

  • F24B7/005 - Flue-gas ducts
  • Y10S165/331 - Air draft passage confined entirely by heat transfer surface

• US Classifications

  • 165 - Heat exchange