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发明名称
Frequency meter
摘要
申请公布号
US1889128(A)
申请公布日期
1932.11.29
申请号
US19300492174
申请日期
1930.10.30
申请人
MCCLINTOCK JR WILLIAM S
发明人
JR. WILLIAM S. MCCLINTOCK,
分类号
G01R23/02
主分类号
G01R23/02
代理机构
代理人
主权项
地址
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