-
公开(公告)号：US2851660A
公开(公告)日：1958-09-09
申请号：US38814253
申请日：1953-10-26
Applicant: IBM
Inventor： TOBIN BERNARD M , KORMANSKI MICHAEL J , HAVENS BYRON L
IPC: G01R31/04
CPC classification number: G01R31/041
Search Results
1
records
(took 0.008 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
