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The ornamental design for a hearing protection device, as shown and described. |
FIG. 1 is a front elevational view of a hearing protection device of the invention;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image;
FIG. 5 is an side view thereof, taken along the line 5--5 of FIG. 1;
FIG. 6 is a front elevational view of a hearing protection device in a second embodiment of the invention;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a top plan view thereof;
FIG. 9 is a right side elevational view thereof, the left side elevational view being a mirror image; and,
FIG. 10 is an side view thereof, taken along the line 10--10 of FIG. 6.
Patent | Priority | Assignee | Title |
Patent | Priority | Assignee | Title |
4671265, | Nov 29 1984 | Dalloz Safety AB | Earplug device |
5749373, | Apr 10 1997 | Moldex-Metric, Inc. | Headband with break-away cord attachment |
5809574, | Aug 15 1996 | 3M Innovative Properties Company | Hearing protection device |
D292530, | Nov 29 1984 | BILSOM AB, A CORP OF SWEDEN | Headband earplugs |
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Mar 10 1998 | Cabot Safety Intermediate Corporation | (assignment on the face of the patent) | / | |||
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