发明名称 Geography-teaching puzzle game - has jigsaw pieces with protrusions and recesses representing mountains and valleys
摘要 The geography-teaching game consists of a jigsaw puzzle, with a number of pieces fitting together. The pieces (1-3) have protrusions (7) from their surfaces (5) representing mountains hills, plains (8) etc., and/or recesses (9) repenting valleys and riverbeds. Their peripheral surfaces can be mirror-images of those of the adjacent pices. The features represented can be arranged to extend to neighbouring pieces. USE/ADVANTAGE - Jigsaw puzzle. Forms complete mpa aiding development of pupil's mind in the process.
申请公布号 DE3916295(A1) 申请公布日期 1990.11.22
申请号 DE19893916295 申请日期 1989.05.19
申请人 MUELLER, KLAUS;EMRICH, FRITZ, 6799 KONKEN, DE 发明人 MUELLER, KLAUS;EMRICH, FRITZ, 6799 KONKEN, DE
分类号 A63F3/04;A63F9/10;G09B29/12 主分类号 A63F3/04
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