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发明名称
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摘要
申请公布号
US2690484(A)
申请公布日期
1954.09.28
申请号
US19520301231
申请日期
1952.07.28
申请人
CHRISTIAN J. VAN EYK
发明人
BUCHTENKIRCH ARTHUR J.
分类号
G01F23/38;H01H36/02
主分类号
G01F23/38
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