Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1997-03-04
1998-07-28
Mullen, Thomas
Communications: electrical
Condition responsive indicating system
Specific condition
340505, 34082508, 34082554, G08B 1314
Patent
active
057867640
ABSTRACT:
Methods and apparatus are disclosed for location of objects to facilitate retrieval, filing, security, inventory stock-keeping and the like. The methods and apparatus employ a tag element associated with each object-to-be-located, and interrogation system for searching one or more spatial regions for such tagged items, as well as mechanisms for identifying objects within the interrogated region.
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