Patent search ap:("FED TELECOMM LAB INC") AND inv:"DODINGTON SVEN H M" Page 1

1.

发明授权
Sector antenna switching 失效
Title translation: 扇区天线切换

公开(公告)号：US2485576A

公开(公告)日：1949-10-25

申请号：US74270547

申请日：1947-04-19

Applicant: FED TELECOMM LAB INC

Inventor： DODINGTON SVEN H M

IPC: G01S1/02 , G01S19/25 , H01Q3/24

CPC classification number: H01Q3/24 , G01S1/02

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