-
公开(公告)号:US2896072A
公开(公告)日:1959-07-21
申请号:US42538654
申请日:1954-04-26
Applicant: BELL TELEPHONE LABOR INC
Inventor: BACHELET ALBERT E , DORFF LOUIS A , DOREN MITCHELL
IPC: H04B7/26
CPC classification number: H04B7/26
-
公开(公告)号:US2869964A
公开(公告)日:1959-01-20
申请号:US41378454
申请日:1954-03-03
Applicant: BELL TELEPHONE LABOR INC
Inventor: DOREN MITCHELL , EDWARD VROOM
-
公开(公告)号:US2848545A
公开(公告)日:1958-08-19
申请号:US53689755
申请日:1955-09-27
Applicant: BELL TELEPHONE LABOR INC
Inventor: DOREN MITCHELL
IPC: H04B1/50
CPC classification number: H04B1/50
-
4.Analyzing system for determining the fundamental frequency of a complex wave 失效
Title translation: 分析用于确定复波基频的系统公开(公告)号:US2561478A
公开(公告)日:1951-07-24
申请号:US2968548
申请日:1948-05-28
Applicant: BELL TELEPHONE LABOR INC
Inventor: DOREN MITCHELL
IPC: G10L25/90
CPC classification number: G10L25/90
-
公开(公告)号:US2336880A
公开(公告)日:1943-12-14
申请号:US44482642
申请日:1942-05-28
Applicant: BELL TELEPHONE LABOR INC
Inventor: DOREN MITCHELL
-
公开(公告)号:US2519688A
公开(公告)日:1950-08-22
申请号:US70857446
申请日:1946-11-08
Applicant: BELL TELEPHONE LABOR INC
Inventor: DOREN MITCHELL
IPC: H04Q3/42
CPC classification number: H04Q3/42
-
公开(公告)号:US2491276A
公开(公告)日:1949-12-13
申请号:US2222948
申请日:1948-04-20
Applicant: BELL TELEPHONE LABOR INC
Inventor: DOREN MITCHELL
IPC: H03H2/00
CPC classification number: H03H2/006
-
公开(公告)号:US2322653A
公开(公告)日:1943-06-22
申请号:US31247240
申请日:1940-01-05
Applicant: BELL TELEPHONE LABOR INC
Inventor: DOREN MITCHELL
IPC: G08C21/00
CPC classification number: G08C21/00
-
公开(公告)号:US2306067A
公开(公告)日:1942-12-22
申请号:US36138240
申请日:1940-10-16
Applicant: BELL TELEPHONE LABOR INC
Inventor: LEWIS BENJAMIN F , DOREN MITCHELL
IPC: H04Q3/00
CPC classification number: H04Q3/00
-
公开(公告)号:US2302374A
公开(公告)日:1942-11-17
申请号:US38042541
申请日:1941-02-25
Applicant: BELL TELEPHONE LABOR INC
Inventor: DOREN MITCHELL
IPC: H04B1/58
CPC classification number: H04B1/582
-
-
-
-
-
-
-
-
-