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发明名称
Overhead projector with an unsymmetrical reflective supporting stage
摘要
申请公布号
US3293982(A)
申请公布日期
1966.12.27
申请号
US19640399651
申请日期
1964.09.28
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY
发明人
APPELDORN ROGER H.
分类号
G03B21/06;G03B21/132
主分类号
G03B21/06
代理机构
代理人
主权项
地址
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