2172031

Information

• Patent Grant
• 2172031

• References
• Source

• Patent Number

  2,172,031

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1939
  85 years ago

• CPC

  • C02F1/003 - using household-type filters for producing potable water
  • B01D35/023 - Filler pipe filters

• US Classifications

  • 210 - Liquid purification or separation