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发明名称
Wheel treading machine
摘要
申请公布号
US1972030(A)
申请公布日期
1934.08.28
申请号
US19320625968
申请日期
1932.07.29
申请人
OAKLEY DAVID S
发明人
OAKLEY DAVID S.
分类号
B23P19/00
主分类号
B23P19/00
代理机构
代理人
主权项
地址
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