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发明名称
SHAFT SEALING
摘要
申请公布号
CA464772(A)
申请公布日期
1950.05.02
申请号
CAD464772
申请日期
申请人
AUGUST GUNNAR FERDINAND WALLGREN
发明人
AUGUST GUNNAR FERDINAND WALLGREN
分类号
主分类号
代理机构
代理人
主权项
地址
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