Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"BOMMEL HANS E" Page 1

1.

发明授权
Microwave ultrasonic delay line 失效
Title translation: 微波超声波延时线

公开(公告)号：US3037174A

公开(公告)日：1962-05-29

申请号：US78421858

申请日：1958-12-31

Applicant: BELL TELEPHONE LABOR INC

Inventor： BOMMEL HANS E , KLAUS DRANSFELD

IPC: H03H9/125 , H03H9/36

CPC classification number: H03H9/36 , H03H9/125

Patent Agency Ranking