Improvements in or relating to gun perforators particularly for perforating well casings,申请号GB19460030132-传众专利搜索

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发明名称	Improvements in or relating to gun perforators particularly for perforating well casings
摘要
申请公布号	GB617817(A)	申请公布日期	1949.02.11
申请号	GB19460030132	申请日期	1946.10.09
申请人	BYRON JACKSON CO.	发明人
分类号	E21B43/116	主分类号	E21B43/116
代理机构		代理人
主权项
地址

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