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发明名称
Well survey recorder
摘要
申请公布号
US1837479(A)
申请公布日期
1931.12.22
申请号
US19280321069
申请日期
1928.11.22
申请人
SPERRY-SUN WELL SURVEYING COMPANY
发明人
JR. JOSEPH N. PEW,;BAZZONI CHARLES B.
分类号
E21B47/022
主分类号
E21B47/022
代理机构
代理人
主权项
地址
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