Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2007-02-13
2007-02-13
Hofsass, Jeffery (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S572100, C340S679000, C340S539150
Reexamination Certificate
active
10509916
ABSTRACT:
A method and a device for determining if or where a person (10) is located within an area (5), wherein a foot transceiver (8) connected to the person (10) activates one or several identifiable transponders (6) placed in the area (5), after which the activated transponder(s) (6) emit an identifiable signal, preferably via the foot transceiver (8), onto a main receiver/transmitter (14), each of the received signals then being referred to a known position.
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Røed Frode
Sandvik Sigve
Andrus Sceales Starke & Sawall LLP
Hofsass Jeffery
National Oilwell Norway AS
Walk Samuel
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