Protective face mask

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Description

FIG. 1 is a front elevational view of a protective face mask showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
3060445 October 1962 Brockman
3555559 January 1971 Hundhausen
3602913 September 1971 Neese
D238213 December 1975 Kahn
Patent History
Patent number: D245545
Type: Grant
Filed: Oct 28, 1975
Date of Patent: Aug 23, 1977
Inventor: Chen Ching Chou (San Francisco, Calif. 94133)
Primary Examiner: Joel Stearman
Assistant Examiner: Louis S. Zarfas
Attorney: Harry G. Weissenberger
Application Number: 5/625,956
Classifications
Current U.S. Class: D29/8
International Classification: D2803;