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公开(公告)号：US2565511A
公开(公告)日：1951-08-28
申请号：US7920249
申请日：1949-03-02
Applicant: INT STANDARD ELECTRIC CORP
Inventor： SWIFT MCWHIRTER ERIC MALCOLM , HARRIS DUNN ROLAND , WILLIAM WARDEN FREDERICK , JENNINGS WARD HUGH , ASSIS FONSE HAROLD MOUNTJOY MU , GERARD COLLIER PERCEVAL
IPC: G08B5/22
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