The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 1991
Filed:
Feb. 15, 1989
Applicant:
Inventor:
David L Drummond, Albuquerque, NM (US);
Assignee:
Drummond Scientific Company, Broomall, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264-19 ; 264-17 ; 264-23 ; 264255 ;
Abstract
A process for making optical mirrors which includes making a rough plaster casting to about the desired shape of the mirror, with the casting having a rough surface, and then applying successive thin layers of polyester resin to the surface of the rough casting to form a finished casting having a smooth coated surface suitable for use as an optical mirror.