Combined respirator mouthpiece and filter

- Nicholas Herbert

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Description

FIG. 1 is a perspective view of a combined respirator mouthpiece, and filter, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side elevational view being identical thereto;

FIG. 4 is an end elevational view thereof, the opposite end elevational view being identical; and,

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
3773043 November 1973 Wachter
4071026 January 31, 1978 Bevins
Foreign Patent Documents
144222 June 1920 GBX
Patent History
Patent number: D325780
Type: Grant
Filed: Aug 1, 1989
Date of Patent: Apr 28, 1992
Assignee: Nicholas Herbert (Fullerton, CA)
Inventor: Nini Policappelli (Los Angeles, CA)
Primary Examiner: Stella Reid
Attorney: G. Donald Weber, Jr.
Application Number: 7/388,363
Classifications