Patent · US Expired

Air filtering self-propelled upright vacuum cleaner

US6308374A · kind A · utility

6Cited by
101References
1Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 17, 2000
Grant dateOct 30, 2001
Priority date
Expiry dateApr 17, 2020

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA47L9/325
  • WIPO fieldFurniture, games
  • WIPO sectorOther fields

Abstract

Disclosed is a unique and novel air filtering, self-propelled upright vacuum cleaner. The filtration system utilizes a HEPA-rated air filter as a final filtering element. The disclosed vacuum cleaner contains numerous other features including a self-propelled drive mechanism.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.