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公开(公告)号：US2532304A
公开(公告)日：1950-12-05
申请号：US71718846
申请日：1946-12-19
Applicant: SPECIALTIES DEV CORP
Inventor： HEIZER EDWARD J , STUART MEREDITH R
IPC: B65H63/06
CPC classification number: B65H63/061 , B65H2701/31
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