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发明名称
Reversible-disk harrow
摘要
申请公布号
US1769162(A)
申请公布日期
1930.07.01
申请号
US19280299018
申请日期
1928.08.11
申请人
INTERNATIONAL HARVESTER COMPANY
发明人
PETERSON WALTER R.
分类号
A01B21/08
主分类号
A01B21/08
代理机构
代理人
主权项
地址
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Selectively expanding and printing indicia information
