-
1.发明授权
公开(公告)号：US2717694A
公开(公告)日：1955-09-13
申请号：US43244254
申请日：1954-05-26
Applicant: STANDARD OIL CO
Inventor： PANSING WILLIAM F , WILLIAM RIES ALVIN
IPC: B03B4/06
CPC classification number: B03B4/06
Search Results
1
records
(took 0.016 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
