Protective face mask
Chou August 23, 1
U.S. patent number D245,545 [Application Number 05/625,956] was granted by the patent office on 1977-08-23 for protective face mask. Invention is credited to Chen Ching Chou.
| United States Patent | D245,545 |
| Chou | August 23, 1977 |
Protective face mask
Claims
The ornamental design for a protective face mask, as shown.
| Inventors: | Chou; Chen Ching (San Francisco, Calif. 94133) |
|---|---|
| Appl. No.: | 05/625,956 |
| Filed: | October 28, 1975 |
| Current U.S. Class: | D29/108; D21/660 |
| Current International Class: | D2803 |
| Field of Search: | ;D86/1A ;D88/2 ;D2/234 ;132/9,45R,88.5 ;2/9,11,173-174,206 |
References Cited [Referenced By]
U.S. Patent Documents
| 3060445 | October 1962 | Brockman |
| 3555559 | January 1971 | Hundhausen |
| 3602913 | September 1971 | Neese |
| D238213 | December 1975 | Kahn |
Assistant Examiner: Zarfas; Louis S.
Attorney, Agent or Firm: Weissenberger; Harry G.
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.
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