1343669

Information

• Patent Grant
• 1343669

• References
• Source

• Patent Number

  1,343,669

• Date Filed

  Not available

• Date Issued

  Tuesday, June 15, 1920
  104 years ago

• CPC

  • F28D7/024 - the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
  • Y10S165/438 - Helical

• US Classifications

  • 165 - Heat exchange