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公开(公告)号：US2537178A
公开(公告)日：1951-01-09
申请号：US964448
申请日：1948-02-20
Applicant: STANDARD OIL DEV CO
Inventor： WORSHAM CHARLES H
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公开(公告)号：US2521436A
公开(公告)日：1950-09-05
申请号：US4770648
申请日：1948-09-03
Applicant: STANDARD OIL DEV CO
Inventor： WORSHAM CHARLES H , HOLDER CLINTON H
CPC classification number: C07C2523/745
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