Specification of Frederick Openheim
Subtitle: plastic compound for dental purposes
Publisher: Great Seal Patent Office
Published: 1863
Place of publication: London
Language: eng
Subjects: Chalk; Dental impressions; Oils and fats; Kaolin; Dentures
Description: Patent for "an improved plastic compound for dental purposes to be used instead of wax, gutta percha, or resinous gums in taking the impression of the mouth."
Notes: At head of title: A.D. 1863, 12th February. No.379.

"Frederick Oppenheim, of 379 Strand, in the County of Middlesex."