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. 02, 1982
Filed:
Apr. 30, 1980
Applicant:
Inventor:
Ralph J D'Amato, Lancaster, PA (US);
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; H01J / ;
U.S. Cl.
CPC ...
313448 ; 313414 ; 430314 ; 430316 ; 430312 ; 430-4 ; 430-5 ; 430313 ; 430318 ; 430319 ; 430321 ; 430394 ; 430 23 ; 156634 ; 156644 ; 156656 ; 1566591 ; 1566611 ;
Abstract
A method of making a grid for a cathode-ray tube includes the process of etching an electrically conductive base member of a first material from two sides through related openings in electrically conductive layers of a second material which overlays the two sides of the base material. Etching continues until an aperture of sufficient size is formed that the overlying layers overhang the aperture in the base member.