Hydraulic feed electric drill,申请号US19300505514-传众专利搜索

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发明名称	Hydraulic feed electric drill
摘要
申请公布号	US1977490(A)	申请公布日期	1934.10.16
申请号	US19300505514	申请日期	1930.12.30
申请人	SAWYER MARION B	发明人	SAWYER MARION B.
分类号	B23B47/06;B23Q5/26	主分类号	B23B47/06
代理机构		代理人
主权项
地址

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