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发明名称
Means for and methods of grading trenches and laying pipe therein
摘要
申请公布号
US3171210(A)
申请公布日期
1965.03.02
申请号
US19610157132
申请日期
1961.12.05
申请人
KUNDEL CONSTRUCTION COMPANY
发明人
KUNDEL STEVE
分类号
G01C15/00
主分类号
G01C15/00
代理机构
代理人
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地址
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