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发明名称
Improvements in or relating to safety valves for steam generators
摘要
申请公布号
GB521495(A)
申请公布日期
1940.05.23
申请号
GB19380033208
申请日期
1938.11.15
申请人
KNORR-BREMSE AKTIENGESELLSCHAFT;FRIEDRICH WITTE
发明人
分类号
F16K17/04
主分类号
F16K17/04
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