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发明名称
OIL CONTROL RING
摘要
申请公布号
CA567038(A)
申请公布日期
1958.12.02
申请号
CAD567038
申请日期
申请人
RAMSEY CORPORATION
发明人
MELVIN W. MARIEN
分类号
主分类号
代理机构
代理人
主权项
地址
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