-
公开(公告)号：US2644927A
公开(公告)日：1953-07-07
申请号：US13019849
申请日：1949-11-30
Applicant: FED TELECOMM LAB INC
Inventor： MILTON DISHAL , LE GRAND JESSE S
IPC: H03H2/00
CPC classification number: H03H2/006
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
