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发明名称
Planter
摘要
申请公布号
US2199422(A)
申请公布日期
1940.05.07
申请号
US19380195650
申请日期
1938.03.12
申请人
STEVENS JR WILLIAM G
发明人
JR. WILLIAM G. STEVENS,
分类号
A01C7/18
主分类号
A01C7/18
代理机构
代理人
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