Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"GUMMEL HERMANN K" Page 1

1.

发明授权
Negative resistance microwave device 失效
Title translation: 负电阻微波器件

公开(公告)号：US3426295A

公开(公告)日：1969-02-04

申请号：US3426295D

申请日：1966-05-16

Applicant: BELL TELEPHONE LABOR INC

Inventor： LOACH BERNARD C DE JR , GUMMEL HERMANN K , SCHARFETTER DONALD L

IPC: H01L29/00 , H03B9/12 , H03B5/12 , H03B5/24 , H03B7/06

CPC classification number: H01L29/00 , H03B9/12

2.

发明授权
Time scaled analog model test circuit for an active element and method of making such 失效
Title translation: 用于主动元件的时间分段模拟模型测试电路及其制作方法

公开(公告)号：US3471786A

公开(公告)日：1969-10-07

申请号：US3471786D

申请日：1967-05-31

Applicant: BELL TELEPHONE LABOR INC

Inventor： GUMMEL HERMANN K , MURPHY BERNARD T

IPC: G06G7/62 , G01R13/02 , H03K13/02

CPC classification number: G06G7/62

3.

发明授权
Shock-mounting for electromechanical transducer 失效
Title translation: 机电换能器的安装

公开(公告)号：US3414689A

公开(公告)日：1968-12-03

申请号：US46721265

申请日：1965-06-28

Applicant: BELL TELEPHONE LABOR INC

Inventor： GUMMEL HERMANN K , RIDEOUT VINCENT L

IPC: H04M1/03

CPC classification number: H04M1/03

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