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公开(公告)号：US3161877A
公开(公告)日：1964-12-15
申请号：US10799961
申请日：1961-05-05
Applicant: DEL MAR ENG LAB
Inventor： THORNTON WILLIAM E , CHERRY ISAAC R , CLIFFORD SANCTUARY
CPC classification number: F41J5/12 , G01S13/505
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