-
公开(公告)号：US2548472A
公开(公告)日：1951-04-10
申请号：US79274947
申请日：1947-12-19
Applicant: STANDARD OIL DEV CO
Inventor： GIBSON HAROLD D
IPC: F04B39/00
CPC classification number: F04B39/0055
Search Results
1
records
(took 0.021 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
