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发明名称
Conduit burying attachment
摘要
申请公布号
US3344615(A)
申请公布日期
1967.10.03
申请号
US19650446815
申请日期
1965.04.09
申请人
COFFEY EUGENE R
发明人
COFFEY EUGENE R.
分类号
E02B11/02;E02F5/10
主分类号
E02B11/02
代理机构
代理人
主权项
地址
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