Assignee
ESSELTE SECURITY SYST AB
SE·4 granted patents·331 citations·filing 1984–1989
Top patents by PatentIndex Score
4 records- 0194US4590366AMethod of securing simple codesESSELTE SECURITY SYST AB·Filed 1984·Granted May 20, 1986·254 cites·6 claims
- 0267US4581482AMethod and device for signature verificationESSELTE SECURITY SYST AB·Filed 1984·Granted Apr 8, 1986·53 cites·12 claims
- 0340US5164601AMethod and apparatus for detecting marks on a paper web, using alternate set point values indicative of light intensity to identify marks and non-marksESSELTE SECURITY SYST AB·Filed 1989·Granted Nov 17, 1992·20 cites·14 claims
- 0420US4653667AApparatus for dispensing tickets or the likeESSELTE SECURITY SYST AB·Filed 1984·Granted Mar 31, 1987·4 cites·5 claims
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