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发明名称
Binder rings and method of making same
摘要
申请公布号
US2435561(A)
申请公布日期
1948.02.03
申请号
US19420469255
申请日期
1942.12.16
申请人
PLASTIC BINDING CORPORATION
发明人
SPINNER ISIDORE
分类号
B29C67/00
主分类号
B29C67/00
代理机构
代理人
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地址
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