Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-05-18
2010-02-09
Nguyen, Tai T (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S540000, C340S572100, C340S572400, C340S572800, C340S539260, C073S146200, C073S146800
Reexamination Certificate
active
07659816
ABSTRACT:
A method and a device for detecting intrusion into or tampering with contents of an enclosure. According to the method at least one gas proof seal-barrier is provided in association with the enclosure and a first environment is produced within said gas proof seal-barrier. Said first environment is different regarding at least one characteristic feature from a second environment surrounding said gas proof seal-barrier. At least one detector is arranged within said gas proof seal-barrier for detecting a predetermined change of the characteristic feature of the said first environment. Said detector is transferred irrevocably from a first state to a second state when there is a predetermined change of the characteristic feature, and the state of the detector is supplied to a position outside said gas proof seal-barrier.
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Fredrikson & Byron , P.A.
Nguyen Tai T
Secure Logistics Sweden AB
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