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发明名称
Piston ring
摘要
申请公布号
US1888994(A)
申请公布日期
1932.11.29
申请号
US19310547225
申请日期
1931.06.27
申请人
RAMSEY ACCESSORIES MANUFACTURING CORPORATION
发明人
MARIEN CHARLES A.
分类号
F16J9/06
主分类号
F16J9/06
代理机构
代理人
主权项
地址
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