Inventor
MARKWITZ BARRY J
US5 patents
Patents
5 patentsUS7027955B2Apr 11, 2006
Guard tour system incorporating a positioning system
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US7778802B2Aug 17, 2010
Wireless devices as guard tour checkpoint data collection and checkpoint data communication devices
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US7345577B2Mar 18, 2008
Displays for reporting guard tour data
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US11105909B2Aug 31, 2021
Tracking system for persons and/or objects
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US9633541B2Apr 25, 2017
Display system for tracking large numbers of persons and/or objects
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