| http://www.w3.org/ns/prov#value | - This invention relates to face protectors or shields, and is intended for use more particularly by professional men such as sur-- geons, doctors, dentists and the like, to protect the face and eyes of the operator while performing those operations in which the patient is prone to eject injurious or damaging secretions or germs which would affect the operators health, or interrupt the progress of t
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