Patent
   D320868
Priority
Nov 16 1989
Filed
Nov 16 1989
Issued
Oct 15 1991
Expiry
Oct 15 2005
Assg.orig
Entity
unknown
7
4
n/a
The ornamental design for a gas mask, as shown and described.

FIG. 1 is a front elevational view of a gas mask showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational veiw thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a cross sectional view thereof; and

FIG. 8 is a top and front perspective view thereof.

Kumagai, Hitoshi, Kumagai, Akira

Patent Priority Assignee Title
D331819, Dec 28 1989 THE K COMPANY Diving helmet
D332843, Jun 14 1990 K COMPANY, THE Diving helmet
D342347, Feb 24 1992 Two-window welding mask
D354348, Jul 19 1993 Smoke protective hood
D547442, Oct 14 2005 Avon Polymer Products Limited Escape hood
D696466, Mar 14 2013 ELMER S PRODUCTS INC Shoulder pad mounted clear helmet
D795418, May 13 2016 RPB SAFETY, LLC Respirator helmet
Patent Priority Assignee Title
4250877, May 15 1978 MORSE DIVING EQUIPMENT COMPANY, INC , A CORP OF MA Diver's helmet and face mask for use therewith
4677976, Apr 01 1983 Toyo Cci Kabushiki Kaisha; Katsumi, Fujinuma Emergency mask
181887,
GB2201096,
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