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. 30, 1976
Filed:
Feb. 14, 1974
Applicant:
Inventor:
Johannes Gerardus VAN Lent, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313408 ; 313403 ;
Abstract
The display screen of a colour cathode ray tube comprises a line pattern of elongated phosphor regions. The elongate apertures in the shadow mask having the shape of an approximately spherical sector are arranged along curved lines which during the manufacture of the tube are aligned in one flat plane with the central axis of a linear light source located in the deflection region.
VAN Lent, Johannes. (1976). Shadow mask having elongated apertures concave to vertical center line (U.S. Patent No. 3947718). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3947718
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile