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发明名称
Gauge
摘要
申请公布号
US1898257(A)
申请公布日期
1933.02.21
申请号
US19300418519
申请日期
1930.01.04
申请人
NELSON RALPH M
发明人
NELSON RALPH M.
分类号
G01L19/06
主分类号
G01L19/06
代理机构
代理人
主权项
地址
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