Improvements in sunk wells and drainage systems,申请号GB19300002881-传众专利搜索

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发明名称	Improvements in sunk wells and drainage systems
摘要
申请公布号	GB347603(A)	申请公布日期	1931.04.28
申请号	GB19300002881	申请日期	1930.01.28
申请人	HAGOP AGOPIAN	发明人
分类号	E03B3/12	主分类号	E03B3/12
代理机构		代理人
主权项
地址

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