| 摘要 |
A protective face mask with a concavo-convex shield of methyl methacrylate that covers the wearer's entire face. A nose piece at the concave face of the shield presents laterally spaced fingers to engage the wearer's nose on opposite sides for spacing the shield from the face. Temple sidepieces hinged to the shield on opposite sides are engageable over the wearer's ears to hold the nose piece against the wearer's nose, thus securely positioning the mask on the wearer's head.
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