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发明名称
Null balance control systems
摘要
申请公布号
US2706812(A)
申请公布日期
1955.04.19
申请号
US19510252217
申请日期
1951.10.20
申请人
AMERICAN MACHINE AND METALS, INC.
发明人
DINLOCKER ROBERT IRWIN
分类号
G05D3/14
主分类号
G05D3/14
代理机构
代理人
主权项
地址
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