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公开(公告)号：CA455223A
公开(公告)日：1949-03-15
申请号：CA455223D
Applicant: STANDARD OIL DEV CO
Inventor： KEARBY KENNETH K
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公开(公告)号：CA408593A
公开(公告)日：1942-11-10
申请号：CA408593D
Applicant: STANDARD OIL DEV CO
Inventor： KEARBY KENNETH K
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