Magnetic toy building blocks,申请号US19620196323-传众专利搜索

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发明名称	Magnetic toy building blocks
摘要
申请公布号	US3254440(A)	申请公布日期	1966.06.07
申请号	US19620196323	申请日期	1962.05.21
申请人	DUGGAR ROBERT G	发明人	DUGGAR ROBERT G.
分类号	A63H33/04	主分类号	A63H33/04
代理机构		代理人
主权项
地址

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