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公开(公告)号:US2900346A
公开(公告)日:1959-08-18
申请号:US56633256
申请日:1956-02-20
Applicant: SHELL DEV
Inventor: FOWKES FREDERICK M , SAWYER WEBSTER M , SCHICK MARTIN J
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公开(公告)号:CA534384A
公开(公告)日:1956-12-11
申请号:CA534384D
Applicant: SHELL DEV
Inventor: FOWKES FREDERICK M , SAWYER WEBSTER M , SCHICK MARTIN J
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