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Expired Canadian patentCanada

System for detecting unaccounted for printing in a value printing system

CA 1259704 A · Owner: Pitney Bowes Inc. · Inventors: Edelmann, George B.; Muller, Arno

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A system for detecting fraudulent imprints on documents is disclosed. The system comprises a metering device a, host and a verifying facility. The metering device provides a validation signal to the host and its associated printer. Thereafter the printer prints information which includes information from the validation signal. Thereafter the information printed on a mailpiece can be validated at the verifying facility by detecting the validation information provided by the metering device. The system provides a method to make a secure metering device without an integral printer. This value printing system provides for a secure system that will allow for the detection of fraudulent imprints …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted September 19, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 19, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 16, 1986
GrantedSeptember 19, 1989
Term endedSeptember 19, 2006
Patent numberCA 1259704 A
Classification (IPC)G07B17/04 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedApril 16, 1986Patent grantedSep 19, 1989Term endedSep 19, 2006

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.