发明名称 Method of operating ferrous toy
摘要 The present invention relates to a magnetic toy, and more specifically to a unique procedure which enables an operator to accomplish a series of unusual effects or formations, based on the phenomenon of residual magnetism. The method of the invention is made possible by manipulating a permanent magnet, a series of non-magnetic ferrous balls and a non-magnetic ferrous stick or rod.
申请公布号 US4364196(A) 申请公布日期 1982.12.21
申请号 US19800214274 申请日期 1980.12.08
申请人 SHACKET, SHELDON R. 发明人 SHACKET, SHELDON R.
分类号 A63H33/26;G09B23/18;(IPC1-7):A63H33/26 主分类号 A63H33/26
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