Patent · US Expired

Drop-down face mask assembly

US6457473B1 · kind B1 · utility

192Cited by
60References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 3, 2000
Grant dateOct 1, 2002
Priority date—
Expiry dateApr 3, 2020

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA41D13/1146
  • WIPO fieldOther consumer goods
  • WIPO sectorOther fields

Abstract

An improved face mask that is retained by a carriage and harness assembly, thereby allowing the face mask to drop down from the face of the wearer.

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