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发明名称
Spike-tooth harrow
摘要
申请公布号
US1756820(A)
申请公布日期
1930.04.29
申请号
US19290386039
申请日期
1929.08.15
申请人
CONRAD GAUBATZ
发明人
GAUBATZ CONRAD
分类号
A01B19/06;A01B35/18
主分类号
A01B19/06
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