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公开(公告)号：CA431535A
公开(公告)日：1945-11-27
申请号：CA431535D
Applicant: SHELL DEV
Inventor： EVANS THEODORE W , SCHEIBLI JAMES R
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公开(公告)号：CA409511A
公开(公告)日：1942-12-22
申请号：CA409511D
Applicant: SHELL DEV
Inventor： CRAWFORD CHESTER C , EVANS THEODORE W
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