-
公开(公告)号：US2932792A
公开(公告)日：1960-04-12
申请号：US70636957
申请日：1957-12-31
Applicant: IBM
Inventor： CARROLL WILLIAM N , HERDINA FRED E
IPC: G01R31/26
CPC classification number: G01R31/2608
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
