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发明名称
CONSTRUCTION OF UNDERDRAINAGE
摘要
申请公布号
JPS6480617(A)
申请公布日期
1989.03.27
申请号
JP19870238099
申请日期
1987.09.22
申请人
YAMAMOTO AKIO
发明人
YAMAMOTO AKIO
分类号
E01C13/00;E02B11/00
主分类号
E01C13/00
代理机构
代理人
主权项
地址
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