3663979

Information

• Patent Grant
• 3663979

• References
• Source

• Patent Number

  3,663,979

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1972
  52 years ago

• CPC

  • A47L15/39 - with brushes on movable supports

• US Classifications

  • 015 - Brushing, scrubbing, and general cleaning