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经营范围
发明名称
Valve seat retaining means
摘要
申请公布号
US1949614(A)
申请公布日期
1934.03.06
申请号
US19300503255
申请日期
1930.12.18
申请人
WILCOX-RICH CORPORATION
发明人
MCDONALD CHARLES B.
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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