-
公开(公告)号：US2219408A
公开(公告)日：1940-10-29
申请号：US15513437
申请日：1937-07-22
Applicant: PHILLIPS PETROLEUM CO
Inventor： BENS GEORGE R , CHARLES MACSPORRAN
CPC classification number: G05D16/0641 , F16K17/30 , Y10T137/7785 , Y10T137/7788 , Y10T137/7796 , Y10T137/7808 , Y10T137/7834
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
