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发明名称
Preserving jar and top grinding device
摘要
申请公布号
US2412572(A)
申请公布日期
1946.12.17
申请号
US19440536591
申请日期
1944.05.20
申请人
OTTO FLECK
发明人
FLECK OTTO
分类号
B24B9/12
主分类号
B24B9/12
代理机构
代理人
主权项
地址
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