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公开(公告)号：CA468966A
公开(公告)日：1950-10-24
申请号：CA468966D
Applicant: SHELL DEV
Inventor： RUST FREDERICK F , DICKEY FRANK H
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公开(公告)号：CA461770A
公开(公告)日：1949-12-13
申请号：CA461770D
Applicant: SHELL DEV
Inventor： SCHEIBLI JAMES R , BERGSTEINSSON INGOLFUR , DICKEY FRANK H
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