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公开(公告)号：CA322859A
公开(公告)日：1932-05-31
申请号：CA322859D
Applicant: COMMERCIAL SOLVENTS CORP
Inventor： STENGEL LEONARD A
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公开(公告)号：CA286288A
公开(公告)日：1929-01-08
申请号：CA286288D
Applicant: COMMERCIAL SOLVENTS CORP
Inventor： STENGEL LEONARD A
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