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公开(公告)号：US3383664A
公开(公告)日：1968-05-14
申请号：US62749267
申请日：1967-03-31
Applicant: BELL TELEPHONE LABOR INC
Inventor： FANG-SHANG CHEN , DENTON RICHARD T
CPC classification number: G02F1/0541 , G11C13/047
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2.发明授权
公开(公告)号：US3142026A
公开(公告)日：1964-07-21
申请号：US12199761
申请日：1961-07-05
Applicant: BELL TELEPHONE LABOR INC
Inventor： FANG-SHANG CHEN
IPC: H01P1/365
CPC classification number: H01P1/365
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