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经营范围
发明名称
Seals for pistons and the like
摘要
申请公布号
US2709118(A)
申请公布日期
1955.05.24
申请号
US19550486618
申请日期
1955.02.07
申请人
RALPH W. WALSH
发明人
MARTIN EARNEST E.
分类号
F16J15/32
主分类号
F16J15/32
代理机构
代理人
主权项
地址
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