GAME BOARD MANUFACTURING EQUIPMENT
PROBLEM TO BE SOLVED: To prevent an erroneous shipment of defective products in manufacturing game boards.SOLUTION: A cell film 2 with determination reference marks MK1, MK2 in black circle shapes being printed in non-transparent areas 2Ba, 2Bb where patterns are printed in non-transparent ink other...
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Format: | Patent |
Sprache: | eng ; jpn |
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