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发明名称
Optisches Signalisierungsverfahren
摘要
申请公布号
DE913627(C)
申请公布日期
1954.06.18
申请号
DE1951F008039
申请日期
1951.12.30
申请人
DR.-ING. FRANK FRUENGEL
发明人
FRUENGEL DR.-ING. FRANK
分类号
B60Q1/52
主分类号
B60Q1/52
代理机构
代理人
主权项
地址
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