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发明名称
Apparatus for controlling the movement of heavy masses
摘要
申请公布号
US2189823(A)
申请公布日期
1940.02.13
申请号
US19350034240
申请日期
1935.08.01
申请人
VICKERS HARRY F;FROST NORMAN B
发明人
VICKERS HARRY F.;FROST NORMAN B.
分类号
B23Q5/54
主分类号
B23Q5/54
代理机构
代理人
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