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:
Mar. 13, 1984
Filed:
Sep. 14, 1981
Applicant:
Inventor:
John J Prusak, Indianapolis, IN (US);
Assignee:
RCA Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
51 58 ; 152565 ; 264 39 ; 425229 ; 425810 ;
Abstract
An apparatus is disclosed for grinding the back surfaces of record molding stampers. The apparatus is comprised of a holder in which the stamper is mounted and rotated and a pressure-controlled grinder arm which is designed to engage the back surface of the stamper with an abrasive while the stamper is being rotated so as to remove surface defects.