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发明名称
Signal light projection device
摘要
申请公布号
US2500201(A)
申请公布日期
1950.03.14
申请号
US19470744820
申请日期
1947.04.30
申请人
MARSHALL CRUMMIE
发明人
PORTER HALLIE
分类号
B60Q1/34;G09F19/18
主分类号
B60Q1/34
代理机构
代理人
主权项
地址
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