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. 26, 1999
Filed:
Sep. 19, 1996
Applicant:
Inventor:
Klaus-Peter Helmetag, Hagen-Holthausen, DE;
Assignee:
Wickeder Westgalenstahl GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430 23 ; 430-5 ; 216 12 ;
Abstract
A shadow mask of two different metals which are cold rolled into adhesion with the shadow mask made from a first metal having a coefficient of thermal expansion on the order of glass and a second metal having a coefficient of thermal expansion substantially greater than glass with the first metal forming a framework for holding the second metal in position even though the temperature of the first and second metals is elevated.