Apparatus for counting casing or tubing collars,申请号US19300460183-传众专利搜索

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发明名称	Apparatus for counting casing or tubing collars
摘要
申请公布号	US1988785(A)	申请公布日期	1935.01.22
申请号	US19300460183	申请日期	1930.06.10
申请人	UNION OIL COMPANY OF CALIFORNIA	发明人	DILLON LYLE
分类号	G06M1/08;G06M7/04	主分类号	G06M1/08
代理机构		代理人
主权项
地址

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