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发明名称
Road ripper
摘要
申请公布号
US1931783(A)
申请公布日期
1933.10.24
申请号
US19310580905
申请日期
1931.12.14
申请人
WICKES POWERS A
发明人
WICKES POWERS A.
分类号
E01C23/12
主分类号
E01C23/12
代理机构
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