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发明名称
METODO E DISPOSITIVO PER CONTROLLARE LE GRINZE IN UN DIAFRAMMA VIBRANTE DI UN TRASDUTTORE ELETTROACUSTICO.
摘要
申请公布号
IT7922115(D0)
申请公布日期
1979.04.24
申请号
IT19790022115
申请日期
1979.04.24
申请人
POLAROID CORPORATION
发明人
分类号
H04R7/24;H04R19/00;H04R31/00;(IPC1-7):H04R/
主分类号
H04R7/24
代理机构
代理人
主权项
地址
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