2021117

Information

• Patent Grant
• 2021117

• References
• Source

• Patent Number

  2,021,117

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1935
  90 years ago

• CPC

  • F28F1/36 - the means being helically wound fins or wire spirals
  • F28F2215/00 - Fins
  • Y10S165/439 - Serially connected conduit assemblies
  • Y10T29/49382 - Helically finned

• US Classifications

  • 165 - Heat exchange
  • 029 - Metal working