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发明名称
Piston and piston ring
摘要
申请公布号
US1849698(A)
申请公布日期
1932.03.15
申请号
US19300462711
申请日期
1930.06.21
申请人
THE PERFECT CIRCLE COMPANY
发明人
TEETOR CHARLES N.
分类号
F16J9/20
主分类号
F16J9/20
代理机构
代理人
主权项
地址
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