3432905

Information

• Patent Grant
• 3432905

• References
• Source

• Patent Number

  3,432,905

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1969
  57 years ago

• CPC

  • B21D53/085 - with fins places on zig-zag tubes or parallel tubes
  • B21C37/24 - annularly-ribbed tubes
  • Y10T29/49375 - including conduit expansion or inflation
  • Y10T29/4938 - Common fin traverses plurality of tubes
  • Y10T29/4981 - Utilizing transitory attached element or associated separate material

• US Classifications

  • 029 - Metal working