-
公开(公告)号:US2571160A
公开(公告)日:1951-10-16
申请号:US70570646
申请日:1946-10-25
Applicant: STANDARD OIL DEV CO
Inventor: PARKER PAUL T , HILLARD JR GEORGE O
-
公开(公告)号:US2702742A
公开(公告)日:1955-02-22
申请号:US19567750
申请日:1950-11-14
Applicant: STANDARD OIL DEV CO
Inventor: HILLARD JR GEORGE O
IPC: B01J8/30
CPC classification number: B01J8/30
-