2220772

Information

• Patent Grant
• 2220772

• References
• Source

• Patent Number

  2,220,772

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1940
  84 years ago

• CPC

  • E03B3/20 - of elements of special shape
  • B01D29/35 - arranged for outward flow filtration
  • B01D35/02 - Filters adapted for location in special places

• US Classifications

  • 004 - Baths, closets, sinks, and spittoons