909632

Information

• Patent Grant
• 909632

• References
• Source

• Patent Number

  909,632

• Date Filed

  Not available

• Date Issued

  Tuesday, January 12, 1909
  116 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
  • 237 - Heating systems