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发明名称
Signal device
摘要
申请公布号
US2120380(A)
申请公布日期
1938.06.14
申请号
US19360065543
申请日期
1936.02.25
申请人
THOMPSON ARTHUR R
发明人
THOMPSON ARTHUR R.
分类号
B60Q1/34
主分类号
B60Q1/34
代理机构
代理人
主权项
地址
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