3688338

Information

• Patent Grant
• 3688338

• References
• Source

• Patent Number

  3,688,338

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1972
  52 years ago

• CPC

  • A47L9/0422 - driven by the rotation of the supporting wheels on which the nozzle travels over the floor
  • A47L9/045 - Friction gearings
  • A47L11/33 - having means for storing dirt
  • A47L11/4036 - Parts or details of the surface treating tools
  • A47L11/4041 - Roll shaped surface treating tools
  • A47L11/4044 - Vacuuming or pick-up tools; Squeegees
  • A47L11/4069 - Driving or transmission means for the cleaning tools
  • A47L11/4094 - Accessories to be used in combination with conventional vacuum-cleaning devices

• US Classifications

  • 015 - Brushing, scrubbing, and general cleaning