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发明名称
Bit gauge and positioning or leveling attachment
摘要
申请公布号
US1782284(A)
申请公布日期
1930.11.18
申请号
US19280323550
申请日期
1928.12.03
申请人
MIGUEL BETANCOURT
发明人
BETANCOURT MIGUEL
分类号
B25H1/00
主分类号
B25H1/00
代理机构
代理人
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地址
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