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发明名称
Grain grinder gate valve
摘要
申请公布号
US2314706(A)
申请公布日期
1943.03.23
申请号
US19410377622
申请日期
1941.02.06
申请人
MASSEY-HARRIS COMPANY LTD.
发明人
JOHNSTON HOWARD M.
分类号
B02C7/18
主分类号
B02C7/18
代理机构
代理人
主权项
地址
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