3644960

Information

• Patent Grant
• 3644960

• References
• Source

• Patent Number

  3,644,960

• Date Filed

  Not available

• Date Issued

  Tuesday, February 29, 1972
  52 years ago

• CPC

  • A47L11/4069 - Driving or transmission means for the cleaning tools
  • A47L11/305 - the tools being disc brushes
  • A47L11/325 - Shampoo devices for carpet-sweepers
  • A47L11/4038 - Disk shaped surface treating tools
  • A47L11/4044 - Vacuuming or pick-up tools; Squeegees

• US Classifications

  • 015 - Brushing, scrubbing, and general cleaning