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发明名称
Retaining and binding apparatus
摘要
申请公布号
US2274993(A)
申请公布日期
1942.03.03
申请号
US19400325316
申请日期
1940.03.22
申请人
PEARL HERBERT B
发明人
PEARL HERBERT B.
分类号
B42F11/02
主分类号
B42F11/02
代理机构
代理人
主权项
地址
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