Toy construction elements,申请号US19390257253-传众专利搜索

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法人/股东/高管

发明名称	Toy construction elements
摘要
申请公布号	US2170771(A)	申请公布日期	1939.08.22
申请号	US19390257253	申请日期	1939.02.18
申请人	W. R. BENJAMIN CO.	发明人	BENJAMIN WALTER R.
分类号	A63H33/10	主分类号	A63H33/10
代理机构		代理人
主权项
地址

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