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发明名称
Wave-signal responder system
摘要
申请公布号
US2524493(A)
申请公布日期
1950.10.03
申请号
US19470762733
申请日期
1947.07.22
申请人
FERRANTI LIMITED
发明人
WOOD HUBERT
分类号
A47L11/162;B31B7/00;B65B43/22;F16D1/06;G01S13/76;G01S13/78;G01S13/87;H03D11/02;H03F1/54;H04W84/02
主分类号
A47L11/162
代理机构
代理人
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地址
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