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发明名称
Valve control
摘要
申请公布号
US2685300(A)
申请公布日期
1954.08.03
申请号
US19480064379
申请日期
1948.12.09
申请人
NATIONAL WELDING EQUIPMENT CO.
发明人
HAMMON GEORGE LEONARD
分类号
G05D16/06
主分类号
G05D16/06
代理机构
代理人
主权项
地址
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