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:
Sep. 20, 1983
Filed:
Dec. 03, 1980
Mitsuo Ohsawa, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Electrical circuit apparatus comprising a mother board having pattern of conductive leads on a surface thereof and including at least one opening therein of predetermined size and shape into which is fitted a daughter board which is structurally distinct from the mother board, the mother and daughter boards being of substantially the same thickness. Electrical circuit components are mounted on the composite board which is formed by the combination of the mother and daughter boards, these electrical circuit components having electrodes which are electrically connected to the pattern of conductive leads of the composite board. Preferably, both the mother and daughter boards are provided with patterns of conductive leads. The leads on the mother and daughter boards are interconnected, either directly or through circuit elements. Also disclosed is a process for manufacturing this composite board.