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发明名称
Soil conditioner
摘要
申请公布号
US2638830(A)
申请公布日期
1953.05.19
申请号
US19470792381
申请日期
1947.12.18
申请人
KROPP FORGE COMPANY
发明人
KROPP ROY A.
分类号
A01B33/02
主分类号
A01B33/02
代理机构
代理人
主权项
地址
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