3428990

Information

• Patent Grant
• 3428990

• References
• Source

• Patent Number

  3,428,990

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1969
  56 years ago

• CPC

  • A47L1/09 - for cleaning one side with access from the other side only

• US Classifications

  • 015 - Brushing, scrubbing, and general cleaning