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发明名称
Piston ring
摘要
申请公布号
US1894000(A)
申请公布日期
1933.01.10
申请号
US19320615218
申请日期
1932.06.03
申请人
THE AMERICAN HAMMERED PISTON RING COMPANY
发明人
MORTON ALLEN W.
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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