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发明名称
SUBTERRANEAN TUBULAR EARTHWORK AND METHOD OF MAKING SAME
摘要
申请公布号
CA2013808(A1)
申请公布日期
1990.10.10
申请号
CA19902013808
申请日期
1990.04.04
申请人
MATIERE, MARCEL
发明人
MATIERE, MARCEL
分类号
E03F3/04;F16L9/18;F16L9/22
主分类号
E03F3/04
代理机构
代理人
主权项
地址
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