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发明名称
APPARATUS FOR PERFORATING FILM
摘要
申请公布号
US3435190(A)
申请公布日期
1969.03.25
申请号
USD3435190
申请日期
1967.06.27
申请人
W.R. GRACE & CO.
发明人
HENRY G. SCHIRMER
分类号
B26F1/24;B26F1/28;(IPC1-7):H05B7/18
主分类号
B26F1/24
代理机构
代理人
主权项
地址
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