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公开(公告)号：US3049158A
公开(公告)日：1962-08-14
申请号：US1857360
申请日：1960-03-30
Applicant: MARBLE FRANKLIN D , JUNIPER LAWRENCE E , DE ARMOND JAMES L
Inventor： MARBLE FRANKLIN D , JUNIPER LAWRENCE E , DE ARMOND JAMES L
IPC: B27L1/05
CPC classification number: B27L1/08
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