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发明名称
Spirit level
摘要
申请公布号
US2505166(A)
申请公布日期
1950.04.25
申请号
US19460677744
申请日期
1946.06.19
申请人
HILGER & WATTS LIMITED
发明人
WOOD ALBERT
分类号
G01C9/30
主分类号
G01C9/30
代理机构
代理人
主权项
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