JIGSAW PUZZLE

PROBLEM TO BE SOLVED: To solve the problem wherein the conventional jigsaw puzzle is formed by combining a plurality of pieces obtained by punching a printed board where a required pattern or photo into irregular shapes and separating the same, and in selling the jigsaw puzzle, the plurality of piec...

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Bibliographische Detailangaben
1. Verfasser: WAKABAYASHI HARUO
Format: Patent
Sprache:eng
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