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发明名称
Locking device for grain dump piston columns
摘要
申请公布号
US2252312(A)
申请公布日期
1941.08.12
申请号
US19380245336
申请日期
1938.12.12
申请人
WINTER AUGUST P
发明人
WINTER AUGUST P.
分类号
B65G67/46
主分类号
B65G67/46
代理机构
代理人
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