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公开(公告)号:US2488448A
公开(公告)日:1949-11-15
申请号:US59060545
申请日:1945-04-27
Applicant: BELL TELEPHONE LABOR INC
Inventor: TOWNES CHARLES H , WOOLDRIDGE DEAN E
IPC: F41G3/24
CPC classification number: F41G3/24
公开(公告)号:US2488448A
公开(公告)日:1949-11-15
申请号:US59060545
申请日:1945-04-27
Applicant: BELL TELEPHONE LABOR INC
Inventor: TOWNES CHARLES H , WOOLDRIDGE DEAN E
IPC: F41G3/24
CPC classification number: F41G3/24