73338565
Nov 23, 1981
Apr 12, 1983
Ceramics for Making Dental Crowns Shaped for Custom Fit by Dentists to Patients' Teeth; Porcelain Veneers and Coloring Stains Therefor, for Veneering the Ceramic Crowns; and Organic Resins and Plasters for Making Dental Molds
Pharmaceuticals