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公开(公告)号：US2869120A
公开(公告)日：1959-01-13
申请号：US61006656
申请日：1956-09-17
Applicant: DEL MAR ENG LAB
Inventor： LOLMAUGH ORSON B , THORNTON WILLIAM E , SMITH CHARLES A
IPC: F41J9/10
CPC classification number: F41J9/10
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