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发明名称
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摘要
申请公布号
US1967448(A)
申请公布日期
1934.07.24
申请号
US19320648635
申请日期
1932.12.23
申请人
OLSON CHARLES S
发明人
OLSON CHARLES S.
分类号
G01F11/12
主分类号
G01F11/12
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