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| Application No. | Application Title | Issue Date |
| 20050178610 | Swiveling sound-gathering ear guard for masks and helmets A portion of a mask or helmet covering a user's ear has an aperture covered by a sound-collecting and sound-transmissive protector swivelingly mounted thereon. The protector has a substantially parabolic reflector surface oriented substantially perpendicular to the prot... | 08/18/2005 |
