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经营范围
发明名称
Composite piston ring
摘要
申请公布号
US2771329(A)
申请公布日期
1956.11.20
申请号
US19510207585
申请日期
1951.01.24
申请人
WILKENING MANUFACTURING COMPANY
发明人
BRAENDEL HELMUTH G.
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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