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发明名称
VERFAHREN ZUR HERSTELLUNG EINER MEMBRAN FUER EINE AKUSTISCHE VORRICHTUNG AUS GLAESERNEN, HARTEN, KOHLENSTOFFHALTIGEN WERKSTOFFEN
摘要
申请公布号
DE3830126(A1)
申请公布日期
1990.03.15
申请号
DE19883830126
申请日期
1988.09.05
申请人
MITSUBISHI PENCIL CO., LTD., TOKIO/TOKYO, JP
发明人
ODAJIMA, HIDEO, FUJIOKA, GUNMA, JP
分类号
H04R7/02;H04R31/00
主分类号
H04R7/02
代理机构
代理人
主权项
地址
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