Dental Impression-Tray.
Description:
Patent for improvements in dental impression trays that is adaptable for when there is only one or a partial set of teeth. There is a separate, smaller dental impression tray that is easily accessible and can be adapted to take impressions of one tooth or partial teeth.
Date:
August 31, 1920
Creator:
Littlejohn, Thomas F.
Partner:
UNT Libraries Government Documents Department