Pressure control device,申请号US19650449939-传众专利搜索

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发明名称	Pressure control device
摘要
申请公布号	US3369619(A)	申请公布日期	1968.02.20
申请号	US19650449939	申请日期	1965.04.22
申请人	BASSINGER TOOL COMPANY	发明人	BROWN ROBINSON W.
分类号	E21B21/10	主分类号	E21B21/10
代理机构		代理人
主权项
地址

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