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发明名称
Copy-holding apparatus
摘要
申请公布号
US2758503(A)
申请公布日期
1956.08.14
申请号
US19530340591
申请日期
1953.03.05
申请人
THE HALOID COMPANY
发明人
LUFFMAN LIONEL E.;BENSON ROBERT W.
分类号
G03B27/62
主分类号
G03B27/62
代理机构
代理人
主权项
地址
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