Jigsaw puzzle

Details Jigsaw puzzle Jigsaw puzzle

1991-07-10

1992-02-25

Grieb, William H.

Amusement devices: games

Puzzles

Take-aparts and put-togethers

A63F 910

Patent

active

050907018

ABSTRACT:
A jigsaw puzzle including a base, a number of conductors disposed on the base and arranged in a line, a switch disposed between every two adjacent conductors, a number of jigsaw pieces can be disposed upon the switch, a sounding device connected between two of the conductors and sending out a sound when all of the switches are depressed by the jigsaw pieces and when all of the jigsaw pieces are correctly disposed in place.

REFERENCES:
patent: 2505230 (1950-04-01), Composto
patent: 2656617 (1953-10-01), Composto
patent: 2918287 (1959-12-01), Rosenblum et al.
patent: 2923550 (1960-02-01), Blackman et al.
patent: 3015895 (1962-01-01), Stall
patent: 3633074 (1972-01-01), Nojiri
patent: 4023807 (1977-05-01), Santianni
patent: 4893817 (1990-01-01), Shilo

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