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发明名称
Portable machine for boring tapered elliptical holes
摘要
申请公布号
US1893810(A)
申请公布日期
1933.01.10
申请号
US19270181374
申请日期
1927.04.06
申请人
PACIFIC COPPER AND BRASS WORKS COMPANY, INCORPORATED
发明人
TRAVIS BERTRAM C.
分类号
B23Q27/00
主分类号
B23Q27/00
代理机构
代理人
主权项
地址
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