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发明名称
SIGNAL DEVICE
摘要
申请公布号
CA383745(A)
申请公布日期
1939.08.29
申请号
CAD383745
申请日期
申请人
WALLACE AND TIERNAN PRODUCTS
发明人
CHARLES FREDERICK WALLACE;JOHN RICHARDS MACKAY
分类号
主分类号
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代理人
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