3391731

Information

• Patent Grant
• 3391731

• References
• Source

• Patent Number

  3,391,731

• Date Filed

  Not available

• Date Issued

  Tuesday, July 9, 1968
  56 years ago

• CPC

  • F28D1/0246 - heat-exchange elements having several adjacent conduits forming a whole
  • B21C23/10 - Making finned tubes
  • F28F21/088 - for domestic or space-heating systems

• US Classifications

  • 165 - Heat exchange