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发明名称
Trench digging and refilling apparatus
摘要
申请公布号
US3332249(A)
申请公布日期
1967.07.25
申请号
US19650427316
申请日期
1965.01.22
申请人
CHALLENGE-COOK BROS.
发明人
IDOINE HARRY E.
分类号
E02F5/10;E02F5/12
主分类号
E02F5/10
代理机构
代理人
主权项
地址
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