3674086

Information

• Patent Grant
• 3674086

• References
• Source

• Patent Number

  3,674,086

• Date Filed

  Not available

• Date Issued

  Tuesday, July 4, 1972
  52 years ago

• CPC

  • F16L9/18 - Double-walled pipes Multi-channel pipes or pipe assemblies
  • E21B36/003 - Insulating arrangements
  • F17D1/084 - for hot fluids

• US Classifications

  • 165 - Heat exchange
  • 062 - Refrigeration
  • 405 - Hydraulic and earth engineering