发明名称 TILLAGE DISCS
摘要 <p>An agricultural tillage disc having a replaceable annular blade. The central hub of the disc consists of two sections clamped together so that the inner edge of the annular blade is securely held therebetween.</p>
申请公布号 CA1093888(A) 申请公布日期 1981.01.20
申请号 CA19780316652 申请日期 1978.11.22
申请人 MCKAY (RALPH) LIMITED 发明人 JOHNSON, WILLIAM M.
分类号 A01B15/16;(IPC1-7):01B15/16;01B23/06 主分类号 A01B15/16
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