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公开(公告)号:US2423306A
公开(公告)日:1947-07-01
申请号:US60831045
申请日:1945-08-01
Applicant: DONALD FORBES GORDON , HERBERT SHAPIRO
Inventor: DONALD FORBES GORDON , HERBERT SHAPIRO
IPC: H03H9/125
CPC classification number: H03H9/125
公开(公告)号:US2423306A
公开(公告)日:1947-07-01
申请号:US60831045
申请日:1945-08-01
Applicant: DONALD FORBES GORDON , HERBERT SHAPIRO
Inventor: DONALD FORBES GORDON , HERBERT SHAPIRO
IPC: H03H9/125
CPC classification number: H03H9/125