311839

Information

• Patent Grant
• 311839

• References
• Source

• Patent Number

  311,839

• Date Filed

  Not available

• Date Issued

  Tuesday, February 3, 1885
  139 years ago

• CPC

  • F28D7/024 - the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
  • Y10S165/432 - including a tube sheet

• US Classifications

  • 165 - Heat exchange