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发明名称
Improvements in valve cock lubricating devices
摘要
申请公布号
GB486385(A)
申请公布日期
1938.06.02
申请号
GB19370027089
申请日期
1937.10.06
申请人
GUSTAV FRIEDRICH GERDTS
发明人
分类号
F16K5/22
主分类号
F16K5/22
代理机构
代理人
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