3688938

Information

• Patent Grant
• 3688938

• References
• Source

• Patent Number

  3,688,938

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1972
  52 years ago

• CPC

  • F17C13/001 - Thermal insulation specially adapted for cryogenic vessels
  • B65D81/3811 - formed of different materials
  • F17C2203/0329 - Foam
  • F17C2203/0341 - Perlite
  • F17C2203/0629 - Two walls
  • F17C2203/0678 - Concrete
  • F17C2223/0161 - cryogenic
  • F17C2260/033 - by enhancing insulation
  • Y10S220/901 - Liquified gas content, cryogenic

• US Classifications

  • 220 - Receptacles
  • 052 - Static structures
  • 062 - Refrigeration