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发明名称
Standardized insert-aggregates for converting piston-valve locomotives or pistol-valve marine steam engines into such with poppet valve gear
摘要
申请公布号
GB481849(A)
申请公布日期
1938.03.18
申请号
GB19370018418
申请日期
1937.07.02
申请人
HUGO JOHANNES LENTZ
发明人
分类号
F01L31/16
主分类号
F01L31/16
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代理人
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地址
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