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发明名称
Signaling device
摘要
申请公布号
US1959948(A)
申请公布日期
1934.05.22
申请号
US19300500526
申请日期
1930.12.06
申请人
DUQUETTE EDWARD P
发明人
DUQUETTE EDWARD P.
分类号
B60Q1/36
主分类号
B60Q1/36
代理机构
代理人
主权项
地址
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