Electronic odometer
CA 2017298 C · Owner: Seki, Norio · Inventors: Shida, Makoto; Seki, Norio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an electronic odometer. Integrated distance travelled data to be stored in a nonvolatile memory is divided into three portions i.e. high order digital data, medium order digital data and low, order digital data. A plurality of memories constituting the nonvolatile memory are provided. The digit which represents the medium order digital data is used to select addresses or part addresses within the memories which are to be used. The high order digital data which is required to be the most reliable of the three portions are written into at least three memory positions which have been selected by the medium order digital data and the low order digital data is …
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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
- Filed May 22, 1990 and granted March 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 2012.
- 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.