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经营范围
发明名称
Frangible piston ring
摘要
申请公布号
US2626193(A)
申请公布日期
1953.01.20
申请号
US19490101618
申请日期
1949.06.27
申请人
PATTERSON EDGAR W
发明人
PATTERSON EDGAR W.
分类号
F16J9/00;F16J9/06
主分类号
F16J9/00
代理机构
代理人
主权项
地址
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