521838

Information

• Patent Grant
• 521838

• References
• Source

• Patent Number

  521,838

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1894
  130 years ago

• CPC

  • F28D7/024 - the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
  • Y10S165/439 - Serially connected conduit assemblies

• US Classifications

  • 165 - Heat exchange
  • 126 - Stoves and furnaces