Casing spider and the like,申请号US19280264070-传众专利搜索

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法人/股东/高管

发明名称	Casing spider and the like
摘要
申请公布号	US1744380(A)	申请公布日期	1930.01.21
申请号	US19280264070	申请日期	1928.03.23
申请人	JOHN GRANT	发明人	FOLSOM ROBERT H.
分类号	E21B19/10	主分类号	E21B19/10
代理机构		代理人
主权项
地址

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