3660987

Information

• Patent Grant
• 3660987

• References
• Source

• Patent Number

  3,660,987

• Date Filed

  Not available

• Date Issued

  Tuesday, May 9, 1972
  52 years ago

• CPC

  • E21D1/14 - Freezing apparatus
  • E02D3/115 - by freezing
  • E21D1/12 - by freezing
  • Y10T137/3084 - Discriminating outlet for gas

• US Classifications

  • 062 - Refrigeration
  • 137 - Fluid handling
  • 165 - Heat exchange