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| US4708817 | 8 Ago 1986 | 24 Nov 1987 | | Creative art medium for forming artistic expressions having a latent luminescent image pattern | | US5116533 | 11 Jun 1991 | 26 May 1992 | | Phosphorescent marking material | | US5529615 | 15 Jun 1994 | 25 Jun 1996 | Playstation Inc. | Marking material and method for suspending pigment particles |
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