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发明名称
TRAVELLING BLOCK VELOCITY INDICATOR, POSITION INDICATOR AND SAFETY CONTROL
摘要
申请公布号
CA497918(A)
申请公布日期
1953.11.24
申请号
CAD497918
申请日期
申请人
INDEPENDENT DEVELOPMENT COMPANY
发明人
LYNN W. STORM
分类号
主分类号
代理机构
代理人
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