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发明名称
FLEXIBLE DIAPHRAGM DEVICE
摘要
申请公布号
CA334481(A)
申请公布日期
1933.08.01
申请号
CAD334481
申请日期
申请人
THE CANADIAN WESTINGHOUSE COMPANY
发明人
DAVID W. LLOYD
分类号
主分类号
代理机构
代理人
主权项
地址
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