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发明名称
VALVE SPRING COMPRESSORS AND CLAMPING DEVICES
摘要
申请公布号
CA511930(A)
申请公布日期
1955.04.19
申请号
CAD511930
申请日期
申请人
EVAN M. ARTHUR
发明人
EVAN M. ARTHUR
分类号
主分类号
代理机构
代理人
主权项
地址
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