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Date: 2014-06-16 12:36:18Thaumatrope Animation Optics Zoetrope Invention United States Patent and Trademark Office United States patent law Creativity Visual arts Optical illusions Flip book Phenakistoscope | Make Your Own Animated Film FlipbookAdd to Reading ListSource URL: www.uspto.govDownload Document from Source WebsiteFile Size: 712,66 KBShare Document on Facebook |