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:
Oct. 27, 1981
Filed:
Feb. 04, 1980
Applicant:
Inventors:
Charles B Carroll, Trenton, NJ (US);
Howard G Scheible, Livingston, NJ (US);
Assignee:
RCA Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B29C / ; B28B / ;
U.S. Cl.
CPC ...
264134 ; 5120 / ; 5128 / ; 264107 ; 264219 ; 264225 ; 264239 ; 264255 ; 346137 ; 369126 ; 369151 ; 430306 ; 430315 ; 430324 ; 430347 ;
Abstract
An improved method of reproducing a spiral groove pattern in the surface of a plastic disc wherein the intersections of the surface of a metal article generated during the replication process are filled in to form concave junctions.
Carroll, Charles. (1981). Method for preparing stylus lapping discs (U.S. Patent No. 4297312). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4297312
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile