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发明名称
MICROPHONIC MATERIAL
摘要
申请公布号
CA393133(A)
申请公布日期
1940.12.10
申请号
CAD393133
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
HERMAN GREGG WEHE;CARL JOSEPH CHRISTENSEN;FREDERICK SHAND GOUCHER
分类号
主分类号
代理机构
代理人
主权项
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