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发明名称
Squaring device
摘要
申请公布号
US2443788(A)
申请公布日期
1948.06.22
申请号
US19460639378
申请日期
1946.01.05
申请人
WALTER W. PIERCE
发明人
FERGUSON RALPH C.
分类号
B23Q3/00
主分类号
B23Q3/00
代理机构
代理人
主权项
地址
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