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公开(公告)号：US2855848A
公开(公告)日：1958-10-14
申请号：US51512655
申请日：1955-06-13
Applicant: SPECIALTIES DEV CORP
Inventor： BOOKS THOMAS V , HEIGIS HENRY E
IPC: F42B5/08
CPC classification number: F42B5/08
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