-
1.
公开(公告)号:US2527638A
公开(公告)日:1950-10-31
申请号:US77628047
申请日:1947-09-26
Applicant: BELL TELEPHONE LABOR INC
Inventor: KREER JR JOHN G , EUGENE PETERSON
IPC: H04J3/06
CPC classification number: H04J3/0602
-
公开(公告)号:US2614140A
公开(公告)日:1952-10-14
申请号:US16436150
申请日:1950-05-26
Applicant: BELL TELEPHONE LABOR INC
Inventor: KREER JR JOHN G
IPC: H03K3/313
CPC classification number: H03K3/313
-
公开(公告)号:US2488371A
公开(公告)日:1949-11-15
申请号:US60828645
申请日:1945-08-01
Applicant: BELL TELEPHONE LABOR INC
Inventor: BOLLMAN JOHN H , BROOKS FRED A , KREER JR JOHN G
IPC: G01S1/72
CPC classification number: G01S1/72
-
公开(公告)号:US2340813A
公开(公告)日:1944-02-01
申请号:US46794642
申请日:1942-12-05
Applicant: BELL TELEPHONE LABOR INC
Inventor: KREER JR JOHN G , MALLINCKRODT CHARLES O
IPC: H04B3/12
CPC classification number: H04B3/12
-
公开(公告)号:US2614141A
公开(公告)日:1952-10-14
申请号:US16436250
申请日:1950-05-26
Applicant: BELL TELEPHONE LABOR INC
Inventor: EDSON JAMES O , KREER JR JOHN G
-
公开(公告)号:US2530528A
公开(公告)日:1950-11-21
申请号:US56144844
申请日:1944-11-01
Applicant: BELL TELEPHONE LABOR INC
Inventor: KREER JR JOHN G
IPC: G01S1/72
CPC classification number: G01S1/72
-
公开(公告)号:US2429216A
公开(公告)日:1947-10-21
申请号:US55717844
申请日:1944-10-04
Applicant: BELL TELEPHONE LABOR INC
Inventor: BOLLMAN JOHN H , KREER JR JOHN G
IPC: G01R25/00
CPC classification number: G01R25/00
-
公开(公告)号:US2103468A
公开(公告)日:1937-12-28
申请号:US7199736
申请日:1936-04-01
Applicant: BELL TELEPHONE LABOR INC
Inventor: KREER JR JOHN G
IPC: H03F1/36
CPC classification number: H03F1/36
-
公开(公告)号:US1897639A
公开(公告)日:1933-02-14
申请号:US59224132
申请日:1932-02-11
Applicant: BELL TELEPHONE LABOR INC
Inventor: KREER JR JOHN G
IPC: H03H7/07
CPC classification number: H03H7/07
-
公开(公告)号:US3361877A
公开(公告)日:1968-01-02
申请号:US36409664
申请日:1964-05-01
Applicant: BELL TELEPHONE LABOR INC
Inventor: KREER JR JOHN G
IPC: G10L19/02
CPC classification number: G10L19/02
-
-
-
-
-
-
-
-
-