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发明名称
Method of manufacturing piston rings
摘要
申请公布号
US1849467(A)
申请公布日期
1932.03.15
申请号
US19270185029
申请日期
1927.04.19
申请人
ZAIDAN HOJIN RIKAGAKU KENKYUJO
发明人
OKOCHI MASATOSI;EBIHARA KEIKICHI
分类号
B23P15/06
主分类号
B23P15/06
代理机构
代理人
主权项
地址
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