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发明名称
GLARE-REDUCING SHIELD AND METHOD OF USING, AND OVERHEAD PROJECTOR HAVING SAME
摘要
申请公布号
CA879213(A)
申请公布日期
1971.08.24
申请号
CAD879213
申请日期
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY
发明人
JAMES V. ERWIN
分类号
主分类号
代理机构
代理人
主权项
地址
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