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发明名称
CREST CONTROL GATE FOR DAMS
摘要
申请公布号
CA519523(A)
申请公布日期
1955.12.13
申请号
CAD519523
申请日期
申请人
S. MORGAN SMITH COMPANY
发明人
HOWARD A. MAYO
分类号
主分类号
代理机构
代理人
主权项
地址
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