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发明名称
Valve gauge
摘要
申请公布号
US2323508(A)
申请公布日期
1943.07.06
申请号
US19410420803
申请日期
1941.11.28
申请人
ACKER RALPH E
发明人
ACKER RALPH E.
分类号
G01B5/00
主分类号
G01B5/00
代理机构
代理人
主权项
地址
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