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发明名称
DEPTH GAUGE FOR DISC SEEDERS
摘要
申请公布号
CA422317(A)
申请公布日期
1944.08.29
申请号
CAD422317
申请日期
申请人
AUGUST SUMMACH
发明人
AUGUST SUMMACH
分类号
主分类号
代理机构
代理人
主权项
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