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:
Jan. 22, 1985
Filed:
Apr. 22, 1983
Applicant:
Inventor:
Donald H Petcen, Colonial Heights, VA (US);
Assignee:
Coburn Optical Industries, Inc., Muskogee, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D06C / ;
U.S. Cl.
CPC ...
381022 ; 156323 ;
Abstract
A device to prevent optical distortion in glass-plastic composite lenses comprising an open outer ring having adjusting means, an inner ring held by the outer ring, and an elastic material in stretched position covering the inner ring and held in stretched position by a force exerted on the outer ring by the tightening of the adjusting means.
Petcen, Donald. (1985). Wrinkle prevention frame for lens manufacture (U.S. Patent No. 4494344). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4494344
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile