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发明名称
Piezo-electric indicator
摘要
申请公布号
US1860145(A)
申请公布日期
1932.05.24
申请号
US19260146596
申请日期
1926.11.06
申请人
RADIO CORPORATION
发明人
GIEBE ERICH;SCHEIBE ADOLF
分类号
G01R29/22
主分类号
G01R29/22
代理机构
代理人
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地址
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