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发明名称
Attachment for cultivators
摘要
申请公布号
US2720148(A)
申请公布日期
1955.10.11
申请号
US19520301834
申请日期
1952.07.31
申请人
PROEFROCK CARL R
发明人
PROEFROCK CARL R.
分类号
A01B39/20
主分类号
A01B39/20
代理机构
代理人
主权项
地址
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