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发明名称
Harrow
摘要
申请公布号
US2321663(A)
申请公布日期
1943.06.15
申请号
US19400360120
申请日期
1940.10.07
申请人
DONOVAN PATRICK L
发明人
DONOVAN PATRICK L.
分类号
A01B19/02
主分类号
A01B19/02
代理机构
代理人
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