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发明名称
Hydraulic lift for scraper blades
摘要
申请公布号
US1909854(A)
申请公布日期
1933.05.16
申请号
US19280321892
申请日期
1928.11.26
申请人
CHARLES G. WILLETT
发明人
DEAN GEORGE E.
分类号
E02F3/76
主分类号
E02F3/76
代理机构
代理人
主权项
地址
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