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发明名称
Piston ring
摘要
申请公布号
US2101244(A)
申请公布日期
1937.12.07
申请号
US19330698029
申请日期
1933.11.15
申请人
FRED A. LUTHY;DEBORAH R. LUTHY
发明人
CURTIS CHARLES
分类号
F16J9/06
主分类号
F16J9/06
代理机构
代理人
主权项
地址
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