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经营范围
发明名称
OVERHEAD-PROJECTOR MET ANTI-VERBLINDINGSSCHERM.
摘要
申请公布号
NL164396(B)
申请公布日期
1980.07.15
申请号
NL19680015702
申请日期
1968.11.04
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY, SAINT PAUL, MINNESOTA, VER. ST. V. AM.
发明人
分类号
G03B21/132;(IPC1-7):G03B21/13
主分类号
G03B21/132
代理机构
代理人
主权项
地址
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