Means and method of removing cores,申请号US19480063245-传众专利搜索

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发明名称	Means and method of removing cores
摘要
申请公布号	US2638323(A)	申请公布日期	1953.05.12
申请号	US19480063245	申请日期	1948.12.03
申请人	LLOYD SPENCER	发明人	BANNON THOMAS C.
分类号	E21B25/00	主分类号	E21B25/00
代理机构		代理人
主权项
地址

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