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发明名称
Retroreflective elements and structures
摘要
申请公布号
US3025764(A)
申请公布日期
1962.03.20
申请号
US19560613911
申请日期
1956.10.04
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY
发明人
MCKENZIE EUGENE L.
分类号
G02B5/128;G03B21/60
主分类号
G02B5/128
代理机构
代理人
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地址
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