3677405

Information

• Patent Grant
• 3677405

• References
• Source

• Patent Number

  3,677,405

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1972
  52 years ago

• CPC

  • C02F11/20 - by freezing

• US Classifications

  • 210 - Liquid purification or separation
  • 062 - Refrigeration