Hole forming device,申请号US19460674988-传众专利搜索

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发明名称	Hole forming device
摘要
申请公布号	US2442813(A)	申请公布日期	1948.06.08
申请号	US19460674988	申请日期	1946.06.07
申请人	JOYNES ERNEST R	发明人	JOYNES ERNEST R.
分类号	B67B7/48	主分类号	B67B7/48
代理机构		代理人
主权项
地址

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