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发明名称
Pendulum level
摘要
申请公布号
US1962045(A)
申请公布日期
1934.06.05
申请号
US19320594671
申请日期
1932.02.23
申请人
WALTON CHARLES M
发明人
WALTON CHARLES M.
分类号
G01C9/12
主分类号
G01C9/12
代理机构
代理人
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