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发明名称
Rotary scraper
摘要
申请公布号
US2109394(A)
申请公布日期
1938.02.22
申请号
US19360073948
申请日期
1936.04.11
申请人
LIVINGSTON HARRY M
发明人
LIVINGSTON HARRY 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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