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经营范围
发明名称
Means for protecting the exhaust valves in internal-combustion engines
摘要
申请公布号
US2633117(A)
申请公布日期
1953.03.31
申请号
US19490091562
申请日期
1949.05.05
申请人
GUSTAV PIELSTICK
发明人
PIELSTICK GUSTAV
分类号
F01L3/08
主分类号
F01L3/08
代理机构
代理人
主权项
地址
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