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公开(公告)号:US2336168A
公开(公告)日:1943-12-07
申请号:US43824342
申请日:1942-04-09
Applicant: STANDARD OIL DEV CO
Inventor: ECKEL JOHN E
IPC: E21B43/04
CPC classification number: E21B43/04
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公开(公告)号:US2308160A
公开(公告)日:1943-01-12
申请号:US32430840
申请日:1940-03-16
Applicant: STANDARD OIL DEV CO
Inventor: ECKEL JOHN E , MCCARTY GEORGE M
IPC: E21B43/38
CPC classification number: E21B43/38
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公开(公告)号:US2224538A
公开(公告)日:1940-12-10
申请号:US27694039
申请日:1939-06-02
Applicant: STANDARD OIL DEV CO
Inventor: ECKEL JOHN E , REISTLE JR CARL E
IPC: E21B43/04
CPC classification number: E21B43/04
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公开(公告)号:US2692116A
公开(公告)日:1954-10-19
申请号:US28383652
申请日:1952-04-23
Applicant: STANDARD OIL DEV CO
Inventor: CAMP JOHN M , ECKEL JOHN E
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公开(公告)号:US2293974A
公开(公告)日:1942-08-25
申请号:US38489741
申请日:1941-03-24
Applicant: STANDARD OIL DEV CO
Inventor: ECKEL JOHN E
IPC: E21B19/10
CPC classification number: E21B19/10
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公开(公告)号:US2371385A
公开(公告)日:1945-03-13
申请号:US46892142
申请日:1942-12-14
Applicant: STANDARD OIL DEV CO
Inventor: ECKEL JOHN E
IPC: E21B43/08
CPC classification number: E21B43/082
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