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发明名称
Polarized light system for web edge control
摘要
申请公布号
US2904700(A)
申请公布日期
1959.09.15
申请号
US19560596043
申请日期
1956.07.05
申请人
GPE CONTROLS, INC.
发明人
ROCKEY KENNETH O.
分类号
G02B27/28
主分类号
G02B27/28
代理机构
代理人
主权项
地址
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