Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-01-17
2006-01-17
Goins, Davetta W. (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S572500, C340S572700, C340S572800, C324S652000, C343S866000
Reexamination Certificate
active
06987453
ABSTRACT:
A radio frequency security element is provided for electronic surveillance of articles of merchandise. The security element comprises a lower strip conductor (1) and an upper strip conductor (5), which are wound in opposite directions. The upper and lower strip conductors and superimposed and connected in a common contact zone. The coil turns of the two conductor strips each have an included angle of rotation less than 2π. The security element has an improved detection rate and is particularly stable against changes in the resonance frequency.
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Caesar Rivise Bernstein Cohen & Pokotilow Ltd.
Checkpoint Systems International GmbH
Goins Davetta W.
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