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发明名称
Oil control piston
摘要
申请公布号
US1981993(A)
申请公布日期
1934.11.27
申请号
US19330687977
申请日期
1933.09.02
申请人
WILCOX-RICH CORPORATION
发明人
DAISLEY ROBERT H.
分类号
F16J9/20
主分类号
F16J9/20
代理机构
代理人
主权项
地址
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