发明公开
EP1454666A1 Reversibly metachromatic toy 有权
可逆的metachromatisches Spielzeug

Reversibly metachromatic toy
摘要:
A reversibly metachromatic toy (1) having a platelike resin foamed substrate (2), a resin layer (3a,3b) provided on both the outer side surfaces of the foamed substrate, and a reversibly metachromatic layer (4a,4b) provided on at least one-side resin layer partly or all over the surface.
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