1284578

Information

• Patent Grant
• 1284578

• References
• Source

• Patent Number

  1,284,578

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1918
  106 years ago

• CPC

  • F28F21/04 - of ceramic of concrete of natural stone
  • Y10S165/452 - including fins
  • Y10T29/49382 - Helically finned

• US Classifications

  • 165 - Heat exchange
  • 029 - Metal working
  • 122 - Liquid heaters and vaporizers