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摘要
申请公布号
US4902882(A)
申请公布日期
1990.02.20
申请号
US19870099924
申请日期
1987.09.23
申请人
EMHART INDUSTRIES, INC.
发明人
LAVELLE, GARY E.
分类号
G06K17/00;G01D5/249;G06K7/00;G06K7/08;G07C9/00
主分类号
G06K17/00
代理机构
代理人
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地址
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