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发明名称
SENSING PRESENCE OR ABSENCE OF MATERIAL
摘要
申请公布号
AU525104(B2)
申请公布日期
1982.10.21
申请号
AU19780035983
申请日期
1978.05.10
申请人
KEYSTONE INTERNATIONAL, INC.
发明人
DAVID L. HALL
分类号
G01F23/26;(IPC1-7):G01F23/28;G08B13/24
主分类号
G01F23/26
代理机构
代理人
主权项
地址
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