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发明名称
Spring tester
摘要
申请公布号
US2812659(A)
申请公布日期
1957.11.12
申请号
US19550524214
申请日期
1955.07.25
申请人
HUMPHREYS FERDINAND F
发明人
HUMPHREYS FERDINAND F.
分类号
G01N3/00
主分类号
G01N3/00
代理机构
代理人
主权项
地址
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