-
公开(公告)号：US2563439A
公开(公告)日：1951-08-07
申请号：US9545149
申请日：1949-05-26
Applicant: PHILIPS LAB INC
Inventor： WILSON ARTHUR J C
IPC: G01N23/205
CPC classification number: G01N23/205
Search Results
1
records
(took 0.015 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
