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发明名称
Machine for making book binder elements
摘要
申请公布号
US2891585(A)
申请公布日期
1959.06.23
申请号
US19550532724
申请日期
1955.09.06
申请人
SPIRAL BINDING COMPANY, INC.
发明人
CATINI VINCENZO
分类号
B21F45/16
主分类号
B21F45/16
代理机构
代理人
主权项
地址
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