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发明名称
Cultivator and weeder
摘要
申请公布号
US1831686(A)
申请公布日期
1931.11.10
申请号
US19280288655
申请日期
1928.06.27
申请人
RITTER ADOLPH L
发明人
RITTER ADOLPH L.
分类号
A01B39/18
主分类号
A01B39/18
代理机构
代理人
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