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发明名称
Checking and marking attachment for planters
摘要
申请公布号
US2618229(A)
申请公布日期
1952.11.18
申请号
US19470730712
申请日期
1947.02.25
申请人
KNIPPEL ELVIS T
发明人
KNIPPEL ELVIS T.
分类号
A01B69/02
主分类号
A01B69/02
代理机构
代理人
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地址
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