Communications: electrical – Condition responsive indicating system – Specified indicator structure
Patent
1990-07-03
1994-01-04
Ng, Jin F.
Communications: electrical
Condition responsive indicating system
Specified indicator structure
40 5, 70 57, 116307, 235382, 283 72, 340571, 34082532, G08B 300, E05B 6500, B12D 1500
Patent
active
052764354
ABSTRACT:
A labelling system which can protect a very wide variety of items from theft. The system requires four elements in combination: 1) A readily understandable message on an item which describes the state the owner intends the item to be in and further asks observers to take appropriate action should the item not be in that state. 2) The message must be easily detectable by people nearby. 3) The message must be changeable, at least once, to reflect a change in the state of the item it is on but, it must only be changeable by the owner and anyone he or she chooses. 4) The message must be very difficult to tamper with or hide without leaving a trace.
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Mullen Jr. Thomas J.
Ng Jin F.
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