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The ornamental design for an earplug, as shown and described. |
FIG. 1 is a perspective view of an earplug showing my new design;
FIG. 2 is a front elevational view thereof, the rear elevational view being a mirror image;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a front perspective view of a second embodiment of an earplug showing my new design;
FIG. 6 is a front elevational view thereof, the rear elevational view being a mirror image;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a top plan view thereof.
Patent | Priority | Assignee | Title |
4774938, | Apr 09 1987 | SPERIAN HEARING PROTECTION, LLC DELAWARE LIMITED LIABILITY COMPANY | Slow recovery earplug with largely impenetrable surface |
5044463, | Nov 30 1989 | Cabot Safety Intermediate Corporation | Molded foam earplug and method for making same |
5668354, | Nov 02 1995 | Cabot Safety Intermediate Corporation | Earplug assembly and eyewear assembly |
5809574, | Aug 15 1996 | 3M Innovative Properties Company | Hearing protection device |
235483, | |||
236162, | |||
D264249, | Sep 10 1979 | Ear plug | |
D307636, | Nov 05 1987 | Cabot Safety Intermediate Corporation | Earplug or similar article |
97038, |
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Oct 04 1996 | Cabot Safety Intermediate Corporation | (assignment on the face of the patent) | / | |||
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Dec 08 2008 | Cabot Safety Intermediate LLC | 3M Innovative Properties Company | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 022043 | /0189 |
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