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经营范围
发明名称
Combined tractor and soil pulverizer
摘要
申请公布号
US1930507(A)
申请公布日期
1933.10.17
申请号
US19310515707
申请日期
1931.02.14
申请人
CASPERSON JOHN L
发明人
CASPERSON JOHN L.
分类号
A01B33/02
主分类号
A01B33/02
代理机构
代理人
主权项
地址
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