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发明名称
Measuring instrument
摘要
申请公布号
US1978682(A)
申请公布日期
1934.10.30
申请号
US19310539267
申请日期
1931.05.22
申请人
JACOB MARVIN RALPH
发明人
MARVIN RALPH JACOB
分类号
G01B5/08
主分类号
G01B5/08
代理机构
代理人
主权项
地址
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