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发明名称
TUBULAR FILM ADVANCER
摘要
申请公布号
CA548991(A)
申请公布日期
1957.11.19
申请号
CAD548991
申请日期
申请人
E.I. DU PONT DE NEMOURS AND COMPANY
发明人
ROBERT A. COVINGTON, JR.;VINCENT H. WALDIN
分类号
主分类号
代理机构
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