Patent search ap:("STANDARD OIL CO CALIFORNIA") AND inv:"GRAVES FRANCIS G" Page 1

1.

发明授权
Process of treating petroleum oils 失效

公开(公告)号：US1867697A

公开(公告)日：1932-07-19

申请号：US17195127

申请日：1927-03-02

Applicant: STANDARD OIL CO CALIFORNIA

Inventor： GRAVES FRANCIS G

IPC: C10G29/04 , C10G29/12

CPC classification number: C10G29/02 , C10G29/04 , C10G29/12

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