389900

Information

• Patent Grant
• 389900

• References
• Source

• Patent Number

  389,900

• Date Filed

  Not available

• Date Issued

  Tuesday, September 25, 1888
  136 years ago

• CPC

  • F28D7/024 - the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
  • Y10S165/437 - Coiled

• US Classifications

  • 165 - Heat exchange
  • 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing