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发明名称
Elektret sowie Verfahren und Vorrichtung zu seiner Herstellung
摘要
申请公布号
DE1789091(A1)
申请公布日期
1971.08.19
申请号
DE19681789091
申请日期
1968.01.16
申请人
THERMO ELECTRON CORP.
发明人
V. MURPHY,PRESTON
分类号
H01G7/02;H04R19/01
主分类号
H01G7/02
代理机构
代理人
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