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发明名称
Direction signal
摘要
申请公布号
US1835416(A)
申请公布日期
1931.12.08
申请号
US19300419377
申请日期
1930.01.08
申请人
MATHIS HENRY H
发明人
MATHIS HENRY H.
分类号
B60Q1/38
主分类号
B60Q1/38
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代理人
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