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发明名称
Valve seat
摘要
申请公布号
US2112232(A)
申请公布日期
1938.03.29
申请号
US19330695540
申请日期
1933.10.27
申请人
NATIONAL MACHINE PRODUCTS COMPANY
发明人
STOLL ALBERT
分类号
F01L3/22
主分类号
F01L3/22
代理机构
代理人
主权项
地址
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