3345726

Information

• Patent Grant
• 3345726

• References
• Source

• Patent Number

  3,345,726

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1967
  57 years ago

• CPC

  • B21C37/24 - annularly-ribbed tubes
  • B21D53/085 - with fins places on zig-zag tubes or parallel tubes
  • F28F1/32 - the means having portions engaging further tubular elements
  • Y10T29/4938 - Common fin traverses plurality of tubes
  • Y10T29/5188 - Radiator making
  • Y10T29/53122 - including deforming means

• US Classifications

  • 029 - Metal working
  • 165 - Heat exchange