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发明名称
Self-releasing hopper lock
摘要
申请公布号
US3312992(A)
申请公布日期
1967.04.11
申请号
US19640378641
申请日期
1964.06.29
申请人
ELGIN SWEEPER COMPANY
发明人
SCHMIDT ROBERT F.;LEIDECKER HENRY A.;KIRK DONALD G.
分类号
E01H1/04
主分类号
E01H1/04
代理机构
代理人
主权项
地址
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