-
1.发明授权
公开(公告)号：US2821104A
公开(公告)日：1958-01-28
申请号：US51221755
申请日：1955-05-31
Applicant: KAPELLA LTD
Inventor： ALFRED MILLS JOHN
IPC: G01B11/00
CPC classification number: G01B11/00
Search Results
1
records
(took 0.007 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
