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公开(公告)号：US3118139A
公开(公告)日：1964-01-14
申请号：US85536059
申请日：1959-11-25
Applicant: SPECIALTIES DEV CORP
Inventor： GERALD DURSTEWITZ
IPC: G01S13/92
CPC classification number: G01S13/60 , G01S13/003 , G01S13/92
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