Patent search ap:("TEXAS CO") AND inv:"TOWNE CHARLES C" Page 4

31.

发明授权
Treatment of hydrocarbon oils 失效

公开(公告)号：US1997159A

公开(公告)日：1935-04-09

申请号：US59130632

申请日：1932-02-06

Applicant: TEXAS CO

Inventor： TOWNE CHARLES C

IPC: C10G9/40

CPC classification number: C10G29/02 , C10G9/40 , C10G29/04

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