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公开(公告)号：US1937554A
公开(公告)日：1933-12-05
申请号：US49391230
申请日：1930-11-06
Applicant: STANDARD IG CO
Inventor： MANFRED DUNKEL , EUGEN DORRER
IPC: C10G49/00
CPC classification number: C10G49/00
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