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发明名称
Improvements in or relating to piston packing ring
摘要
申请公布号
GB705123(A)
申请公布日期
1954.03.10
申请号
GB19520002726
申请日期
1952.02.01
申请人
RAMSEY CORPORATION
发明人
MARIEN MELVIN WILLIAM
分类号
F16J9/04
主分类号
F16J9/04
代理机构
代理人
主权项
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