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经营范围
发明名称
Leveling rod
摘要
申请公布号
US1971751(A)
申请公布日期
1934.08.28
申请号
US19320624752
申请日期
1932.07.26
申请人
KEUFFEL & ESSER CO.
发明人
KEUFFEL ADOLF W.
分类号
G01C15/06
主分类号
G01C15/06
代理机构
代理人
主权项
地址
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