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发明名称
Level and plumb indicator
摘要
申请公布号
US1879587(A)
申请公布日期
1932.09.27
申请号
US19300452485
申请日期
1930.05.14
申请人
SWAIN HARRY P
发明人
SWAIN HARRY P.
分类号
G01C9/04
主分类号
G01C9/04
代理机构
代理人
主权项
地址
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