Vibrator for concrete work,申请号US19340755462-传众专利搜索

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发明名称	Vibrator for concrete work
摘要
申请公布号	US2073393(A)	申请公布日期	1937.03.09
申请号	US19340755462	申请日期	1934.11.30
申请人	MALL ARTHUR W	发明人	MALL ARTHUR W.
分类号	E04G21/08	主分类号	E04G21/08
代理机构		代理人
主权项
地址

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