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发明名称
Transparency slide holder
摘要
申请公布号
US2227973(A)
申请公布日期
1941.01.07
申请号
US19390255475
申请日期
1939.02.09
申请人
EASTMAN KODAK COMPANY
发明人
HOOD HENRY J.
分类号
G03B21/64
主分类号
G03B21/64
代理机构
代理人
主权项
地址
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