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发明名称
Sand expansion indicator
摘要
申请公布号
US2537246(A)
申请公布日期
1951.01.09
申请号
US19480017071
申请日期
1948.03.25
申请人
BUILDERS IRON FOUNDRY
发明人
THORESEN JOHN C.
分类号
G01F23/16
主分类号
G01F23/16
代理机构
代理人
主权项
地址
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