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发明名称
Control device for dental engines and the like
摘要
申请公布号
US2561668(A)
申请公布日期
1951.07.24
申请号
US19460718950
申请日期
1946.12.28
申请人
WM. O. BALLARD
发明人
KECKLEY HAROLD M.
分类号
A61C1/00;H01H3/24
主分类号
A61C1/00
代理机构
代理人
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