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发明名称
Granular material spreader
摘要
申请公布号
US1981095(A)
申请公布日期
1934.11.20
申请号
US19330702804
申请日期
1933.12.16
申请人
DICKERSON NORVIN K
发明人
DICKERSON NORVIN K.
分类号
E01C19/20
主分类号
E01C19/20
代理机构
代理人
主权项
地址
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