Electronic price label replacement system and method
CA 2173938 C · Owner: Zimmerman, Terry L. · Inventors: Zimmerman, Terry L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An EPL replacement system and method which automatically determine whether an EPL should be replaced. A data file contains time data describing an age of the electronic price label. A computer reads the data file and determines whether the age of the electronic price label is greater than a predetermined threshold period for the electronic price label. If the age of the electronic price label is greater than the predetermined threshold period, the computer provides an indication that the electronic price label should be replaced.
Read the whole patent
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
- Filed April 11, 1996 and granted October 17, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.