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经营范围
发明名称
VALVE SAFETY SPRING
摘要
申请公布号
CA486144(A)
申请公布日期
1952.09.02
申请号
CAD486144
申请日期
申请人
WILLIAM WALTERS
发明人
WILLIAM WALTERS
分类号
主分类号
代理机构
代理人
主权项
地址
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