3612175

Information

• Patent Grant
• 3612175

• References
• Source

• Patent Number

  3,612,175

• Date Filed

  Not available

• Date Issued

  Tuesday, October 12, 1971
  53 years ago

• CPC

  • F28F21/08 - of metal
  • F28F1/36 - the means being helically wound fins or wire spirals
  • F28F1/42 - the means being both outside and inside the tubular element
  • Y10S165/535 - Helically formed

• US Classifications

  • 165 - Heat exchange
  • 138 - Pipes and tubular conduits