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发明名称
Plumb bob
摘要
申请公布号
US2594823(A)
申请公布日期
1952.04.29
申请号
US19480055800
申请日期
1948.10.21
申请人
LEW SUVERKROP
发明人
SUVERKROP LEW
分类号
G01C15/10
主分类号
G01C15/10
代理机构
代理人
主权项
地址
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