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发明名称	Button
摘要
申请公布号	US1825029(A)	申请公布日期	1931.09.29
申请号	US19300475284	申请日期	1930.08.14
申请人	FRITZ TRUB	发明人	TRUB FRITZ
分类号	A44B1/30	主分类号	A44B1/30
代理机构		代理人
主权项
地址

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