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:
May. 26, 1992
Filed:
Dec. 11, 1990
Applicant:
Inventors:
Assignee:
Hitachi Seiko, Ltd., , JP;
Primary Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
29829 ; 294264 ; 29825 ; 156901 ;
Abstract
A printed circuit board having a substrate on which circuitry is formed, is spot-faced, by cutting at first the circuitry, and then by spot-facing the substrate up to a desired depth.