Patent search ap:("STANDARD OIL DEV CO") AND inv:"CASSAR HAROLD A" Page 1

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发明授权
Process for treating mineral oils 失效

公开(公告)号：US1803140A

公开(公告)日：1931-04-28

申请号：US21526627

申请日：1927-08-24

Applicant: STANDARD OIL DEV CO

Inventor： STEIK KARL T , CASSAR HAROLD A

IPC: C10G17/06

CPC classification number: C10G17/06

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