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发明名称
Mine
摘要
申请公布号
US1844575(A)
申请公布日期
1932.02.09
申请号
US19190337220
申请日期
1919.11.11
申请人
HARRISON JOHN K M
发明人
HARRISON JOHN K. M.
分类号
F42C3/00;F42C14/04;F42C19/06
主分类号
F42C3/00
代理机构
代理人
主权项
地址
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