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发明名称
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摘要
申请公布号
FR900752(A)
申请公布日期
1945.07.09
申请号
FRD900752
申请日期
1943.12.21
申请人
发明人
LAUREYS THEO
分类号
A01C7/12
主分类号
A01C7/12
代理机构
代理人
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