Printed circuit board having protecting means

Details Printed circuit board having protecting means Printed circuit board having protecting means

1994-05-23

1995-05-16

Picard, Leo P.

Electricity: conductors and insulators

Conduits, cables or conductors

Preformed panel circuit arrangement

174250, 361748, H05K 102

Patent

active

054162769

ABSTRACT:
A printed circuit board includes a polyester film having a printed circuit applied to the bottom surface and a metal cover layer applied to the upper surface. An art printing paper is adhered to the metal cover layer. A number of patterns are printed on the art printing paper for indicating the sound that will be generated when the pattern is depressed. The printed circuit is covered by the metal cover layer and will not be exposed.

REFERENCES:
patent: 3697668 (1972-10-01), Campbell
patent: 5093183 (1992-03-01), Strunka
patent: 5209665 (1993-03-01), Billings et al.
patent: 5226822 (1993-07-01), Moris

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