3077928

Information

• Patent Grant
• 3077928

• References
• Source

• Patent Number

  3,077,928

• Date Filed

  Not available

• Date Issued

  Tuesday, February 19, 1963
  61 years ago

• CPC

  • B21C37/26 - helically-ribbed tubes
  • Y10S165/525 - Helical
  • Y10T29/49378 - Finned tube
  • Y10T29/49936 - Surface interlocking
  • Y10T29/49938 - Radially expanding part in cavity, aperture, or hollow body

• US Classifications

  • 165 - Heat exchange
  • 029 - Metal working