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公开(公告)号：US3069572A
公开(公告)日：1962-12-18
申请号：US77778658
申请日：1958-12-02
Applicant: JAMES KNIGHTS COMPANY
Inventor： DICK LOUIS A , MARTYN LLOYD G
IPC: H03H9/09
CPC classification number: H03H9/09
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