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发明名称
Tap knob
摘要
申请公布号
US2145761(A)
申请公布日期
1939.01.31
申请号
US19380222925
申请日期
1938.08.03
申请人
FISHER FRANCIS C
发明人
FISHER FRANCIS C.
分类号
F16K31/60
主分类号
F16K31/60
代理机构
代理人
主权项
地址
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