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发明名称
Sequential ratio totalizers
摘要
申请公布号
US2898929(A)
申请公布日期
1959.08.11
申请号
US19560582285
申请日期
1956.05.02
申请人
HAGAN CHEMICALS & CONTROLS, INC.
发明人
WILLIAMS RAY S.
分类号
G05B11/44
主分类号
G05B11/44
代理机构
代理人
主权项
地址
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