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发明名称
TRANSDUCER APPARATUS
摘要
申请公布号
CA801879(A)
申请公布日期
1968.12.17
申请号
CAD801879
申请日期
申请人
E.I. DU PONT DE NEMOURS AND COMPANY
发明人
EDWARD W. YETTER
分类号
主分类号
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