3546763

Information

• Patent Grant
• 3546763

• References
• Source

• Patent Number

  3,546,763

• Date Filed

  Not available

• Date Issued

  Tuesday, December 15, 1970
  54 years ago

• CPC

  • F28D1/0477 - the conduits being bent in a serpentine or zig-zag
  • 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
  • F28F2215/12 - with U-shaped slots for laterally inserting conduits
  • Y10T29/49368 - with inserted tubes
  • Y10T29/49805 - Shaping by direct application of fluent pressure

• US Classifications

  • 029 - Metal working