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公开(公告)号：US2998780A
公开(公告)日：1961-09-05
申请号：US58791056
申请日：1956-05-28
Applicant: ANSPACHER WILLIAM B , SCOTT ELLIS H , BOWEN GILBERT C , REDMOND JOSEPH J , DETWILER ROBERT L
Inventor： ANSPACHER WILLIAM B , SCOTT ELLIS H , BOWEN GILBERT C , REDMOND JOSEPH J , DETWILER ROBERT L
IPC: F42B14/06
CPC classification number: F42B14/064
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