发明名称 Methods of monitoring the presence or movements of humans
摘要 Methods in which humans or other mobile bodies are exposed to volatile tracking and marking substances, the vapors of which are detected by ionizing gaseous samples, analyzing the ions in a drift field, and detecting at least a portion of the ions.
申请公布号 US4195513(A) 申请公布日期 1980.04.01
申请号 US19690839775 申请日期 1969.06.18
申请人 FRANKLIN GNO CORP 发明人 COHEN, MARTIN J
分类号 G01N27/64;G01N27/68 主分类号 G01N27/64
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