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发明名称
PIEZOELECTRIC CRYSTAL APPARATUS
摘要
申请公布号
CA464550(A)
申请公布日期
1950.04.18
申请号
CAD464550
申请日期
申请人
BELL TELEPHONE LABORATORIES;WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
WAREEN P. MASON
分类号
主分类号
代理机构
代理人
主权项
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