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公开(公告)号：US1973833A
公开(公告)日：1934-09-18
申请号：US67222833
申请日：1933-05-22
Applicant: STANDARD IG CO
Inventor： ELSE WIETZEL , CONRAD PFAUNDLER
IPC: C10G73/44
CPC classification number: C10G73/44
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