-
公开(公告)号：US2781262A
公开(公告)日：1957-02-12
申请号：US38752453
申请日：1953-10-21
Applicant: ROLLS ROYCE
IPC: C22C21/12
CPC classification number: C22C21/12
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
