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发明名称
Querschwelle
摘要
申请公布号
DE2200181(A1)
申请公布日期
1972.08.17
申请号
DE19722200181
申请日期
1972.01.04
申请人
EISSES,JACOBUS ALBERTUS
发明人
分类号
E01B3/32;E01B3/38
主分类号
E01B3/32
代理机构
代理人
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