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发明名称
Piston and piston ring for internal combustion engines
摘要
申请公布号
US1844923(A)
申请公布日期
1932.02.09
申请号
US19300461317
申请日期
1930.06.16
申请人
THE PERFECT CIRCLE COMPANY
发明人
TEETOR HERMAN
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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