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发明名称
Improvements in or relating to the operation of collets or chucks in machine tools
摘要
申请公布号
GB565019(A)
申请公布日期
1944.10.24
申请号
GB19420011828
申请日期
1942.08.21
申请人
GEORGE MATTEY BAIGENT
发明人
分类号
B23B31/20
主分类号
B23B31/20
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