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公开(公告)号：US3234536A
公开(公告)日：1966-02-08
申请号：US26000763
申请日：1963-02-20
Applicant: SPECIALTIES DEV CORP
Inventor： GRANT JR HARRY C , LOIHLE MALCOLM W
IPC: G08B29/14
CPC classification number: G08B29/14
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