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经营范围
发明名称
Improvements in or relating to free piston seals
摘要
申请公布号
GB833453(A)
申请公布日期
1960.04.27
申请号
GB19560019872
申请日期
1956.06.27
申请人
PAN AMERICAN PETROLEUM CORPORATION
发明人
分类号
F04B47/12
主分类号
F04B47/12
代理机构
代理人
主权项
地址
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