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经营范围
发明名称
Electrical apparatus
摘要
申请公布号
US2443647(A)
申请公布日期
1948.06.22
申请号
US19440552078
申请日期
1944.08.31
申请人
SUBMARINE SIGNAL COMPANY
发明人
WATERMAN CHARLES H.
分类号
G01S1/72
主分类号
G01S1/72
代理机构
代理人
主权项
地址
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