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发明名称
Piston and piston ring
摘要
申请公布号
US1779487(A)
申请公布日期
1930.10.28
申请号
US19290333537
申请日期
1929.01.19
申请人
MCQUAYNORRIS MANUFACTURING COMPANY
发明人
MUMMERT ARDEN JOHN
分类号
F16J9/20
主分类号
F16J9/20
代理机构
代理人
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地址
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