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发明名称
Diaphragm chuck
摘要
申请公布号
US2462501(A)
申请公布日期
1949.02.22
申请号
US19470753785
申请日期
1947.06.10
申请人
N. A. WOODWORTH COMPANY
发明人
HOHWART GEORGE;HOHWART ERNEST F.
分类号
B23B31/02;B23B31/32
主分类号
B23B31/02
代理机构
代理人
主权项
地址
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