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公开(公告)号：US2452892A
公开(公告)日：1948-11-02
申请号：US74654847
申请日：1947-05-07
Applicant: APPLETON ROBERT A , HICKMAN CLARENCE N , BJORK CAROLD F
Inventor： APPLETON ROBERT A , HICKMAN CLARENCE N , BJORK CAROLD F
IPC: F02K9/95
CPC classification number: F02K9/95
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