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发明名称
Signal device
摘要
申请公布号
US2317525(A)
申请公布日期
1943.04.27
申请号
US19390282859
申请日期
1939.07.05
申请人
FINLEY THOMAS J;BURKE EDWARD J
发明人
FINLEY THOMAS J.;BURKE EDWARD J.
分类号
E01F9/012
主分类号
E01F9/012
代理机构
代理人
主权项
地址
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