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公开(公告)号:ZA8803607B
公开(公告)日:1988-11-28
申请号:ZA8803607
申请日:1988-05-20
Inventor: JOHN BLACKWELL , NIHAL SHANTI JAYAWARDANE , RAYMOND BUTLER
IPC: A01C20060101 , A01C
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公开(公告)号:ZA883607B
公开(公告)日:1988-11-28
申请号:ZA883607
申请日:1988-05-20
Inventor: JOHN BLACKWELL , NIHAL SHANTI JAYAWARDANE , RAYMOND BUTLER
IPC: A01C20060101 , A01C
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