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公开(公告)号：US2461958A
公开(公告)日：1949-02-15
申请号：US56812844
申请日：1944-12-14
Applicant: STANDARD OIL DEV CO
Inventor： BONNELL LEONARD S
IPC: C10G51/00
CPC classification number: C10G51/00
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公开(公告)号：US2309540A
公开(公告)日：1943-01-26
申请号：US31939640
申请日：1940-02-17
Applicant: STANDARD OIL DEV CO
Inventor： ROLLMAN WALTER F , BONNELL LEONARD S
IPC: C10B55/00
CPC classification number: C10B55/00
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