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发明名称
Earth scraper with retractable scarifier
摘要
申请公布号
US2865117(A)
申请公布日期
1958.12.23
申请号
US19560564707
申请日期
1956.02.10
申请人
EARTHCAVATOR COMPANY, INC.
发明人
DAVIS MORRIS C.;GANNON ROY C.
分类号
E02F3/60;E02F3/815
主分类号
E02F3/60
代理机构
代理人
主权项
地址
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