3256593

Information

• Patent Grant
• 3256593

• References
• Source

• Patent Number

  3,256,593

• Date Filed

  Not available

• Date Issued

  Tuesday, June 21, 1966
  58 years ago

• CPC

  • B21C37/24 - annularly-ribbed tubes
  • B21D53/085 - with fins places on zig-zag tubes or parallel tubes
  • D01H7/047 - with springs
  • Y10T29/49378 - Finned tube
  • Y10T29/53122 - including deforming means

• US Classifications

  • 029 - Metal working