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经营范围
发明名称
SOUND RECORDING MACHINE
摘要
申请公布号
CA323986(A)
申请公布日期
1932.07.05
申请号
CAD323986
申请日期
申请人
THE WESTERN ELECTRIC COMPANY
发明人
JOHN HECTOR SAILLIARD
分类号
主分类号
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