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公开(公告)号：US3260831A
公开(公告)日：1966-07-12
申请号：US34935164
申请日：1964-03-04
Applicant: SPECIALTIES DEV CORP
Inventor： FASAL JOHN H , ZIMMERMAN JR CHARLES EMANUEL
IPC: G08B23/00
CPC classification number: G08B23/00
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