3744639

Information

• Patent Grant
• 3744639

• References
• Source

• Patent Number

  3,744,639

• Date Filed

  Not available

• Date Issued

  Tuesday, July 10, 1973
  51 years ago

• CPC

  • C02F1/003 - using household-type filters for producing potable water
  • B01D23/04 - with filter bags filtering from the inside
  • B01D29/0018 - Filters with screens or sheets
  • B01D29/0027 - Filters with loose, granular, or fibrous filtering material

• US Classifications

  • 210 - Liquid purification or separation