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发明名称
SCHALUNG FUER DIE AUSSENSEITEN EINES KANALS O.DGL.
摘要
申请公布号
DE2338168(B2)
申请公布日期
1977.01.27
申请号
DE19732338168
申请日期
1973.07.27
申请人
发明人
分类号
B28B7/22;E04G11/34;F16L1/038;(IPC1-7):E02D29/10
主分类号
B28B7/22
代理机构
代理人
主权项
地址
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