-
公开(公告)号：US2523701A
公开(公告)日：1950-09-26
申请号：US3849148
申请日：1948-07-13
Applicant: JAMES KNIGHTS COMPANY
Inventor： KUEHL CLIFFORD O
IPC: H03H9/09
CPC classification number: H03H9/09
Search Results
1
records
(took 0.009 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
