Method of making printed circuit board

Details Method of making printed circuit board Method of making printed circuit board

1995-11-22

1996-07-23

Arbes, Carl J.

Metal working

Method of mechanical manufacture

Electrical device making

174250, 174266, 427 97, H05K 310

Patent

active

055377408

ABSTRACT:
A blind hole extending from upper or surface wiring of a printed circuit board to inner or lower wiring, and having an opening larger than the bottom, is formed on a substrate, and a conductor pattern is formed on the bottom and the internal wall of the blind hole to connect the inner wiring with the surface wiring.

REFERENCES:
patent: 4642160 (1987-02-01), Burgess
patent: 4985600 (1991-01-01), Heerman
patent: 4996391 (1991-02-01), Schmidt
patent: 5108553 (1992-04-01), Foster et al.
patent: 5347712 (1994-09-01), Yasuda et al.

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