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发明名称
Signal device
摘要
申请公布号
US2430698(A)
申请公布日期
1947.11.11
申请号
US19430478773
申请日期
1943.03.11
申请人
JOSEPH W. VAN KARNER
发明人
ALLEN DAVID W.
分类号
B63B51/04;G08B5/40
主分类号
B63B51/04
代理机构
代理人
主权项
地址
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