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发明名称
Electronic oscillator metering device
摘要
申请公布号
US3001129(A)
申请公布日期
1961.09.19
申请号
US19570698013
申请日期
1957.11.21
申请人
KNOWLES HUGH S
发明人
KNOWLES HUGH S.
分类号
G01B7/02;G06M1/10
主分类号
G01B7/02
代理机构
代理人
主权项
地址
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