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发明名称
Vorrichtung zur Drehzahlmessung
摘要
申请公布号
DE849192(C)
申请公布日期
1952.09.11
申请号
DE1950N001961
申请日期
1950.09.22
申请人
N. V. DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ
发明人
WILSON JOSEPH GEORGE
分类号
G01P3/20
主分类号
G01P3/20
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代理人
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