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特許 権利維持 A four-panelled flat card that folds upon itself to form a pyramid with the help of adhesive strips. One of the panels will have adhesive that will permit it to be joined to 19 other pyramids to form a sphere. Individual images are printed on each panel which allows spheres to be formed with different images on the top side. Furthermore, partial images on each pyramid could be joined with other partial images on other pyramids to create a larger complete image.
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