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发明名称
Elevating scraper
摘要
申请公布号
US3292278(A)
申请公布日期
1966.12.20
申请号
US19630309474
申请日期
1963.09.17
申请人
JOHNSON MANUFACTURING COMPANY
发明人
JOHNSON CHARLES M.
分类号
E02F3/64
主分类号
E02F3/64
代理机构
代理人
主权项
地址
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