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发明名称
WIRELESS ALARM DEVICE
摘要
申请公布号
CA331455(A)
申请公布日期
1933.04.04
申请号
CAD331455
申请日期
申请人
THE CANADIAN MARCONI COMPANY
发明人
WILLIAM ARNOLD APPLETON
分类号
主分类号
代理机构
代理人
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地址
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