发明名称 Hidden image games
摘要 A method of playing a game wherein the game has a predetermined period of time as an element of the game. Such method comprises providing a game sheet, the game sheet has a first substrate with an image surface having at least one imprinted hidden image on such surface and a second substrate with an activation surface having an activation medium thereon. The predetermined period time of the game is initiated by contacting the activation surface with the image surface to thereby contact the activation medium with the imprinted hidden image. The activation medium coacts with the imprinted hidden image to develop and reveal the image after the predetermined period of time has expired and to indicate the end of the predetermined period of time in the game.
申请公布号 US2002113373(A1) 申请公布日期 2002.08.22
申请号 US20020042950 申请日期 2002.01.09
申请人 发明人 HAAS DAVID J.
分类号 A63F3/06;A63F9/00;(IPC1-7):A63F9/18 主分类号 A63F3/06
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