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公开(公告)号：CA433043A
公开(公告)日：1946-02-12
申请号：CA433043D
Applicant: STANDARD OIL DEV CO
Inventor： CALHOUN B VAN , LAUGHLIN KENNETH C
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公开(公告)号：CA411660A
公开(公告)日：1943-04-06
申请号：CA411660D
Applicant: STANDARD OIL DEV CO
Inventor： SWEENEY WILLIAM J , LAUGHLIN KENNETH C
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