Method for placing divided materials at relatively inaccessible points,申请号US19310556343-传众专利搜索

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发明名称	Method for placing divided materials at relatively inaccessible points
摘要
申请公布号	US1975162(A)	申请公布日期	1934.10.02
申请号	US19310556343	申请日期	1931.08.11
申请人	LAYNE LESLIE A	发明人	LAYNE LESLIE A.
分类号	E03B3/10;E21B43/04	主分类号	E03B3/10
代理机构		代理人
主权项
地址

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