Improved electric vehicles
CA 2274423 A1 · Owner: De Paschoal, Glaucio Roberto · Inventors: De Paschoal, Glaucio Roberto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Back centuries ago mankind had dreamed of having means of transportation faster than horse drawn vehicles. It is well known the many attempts made right after the discovery of the steam engine, in 1839, the first electric automobile built by Robert Anderson of Aberdeen, Scotland, and the following ones that failed due to the excessive weight of the vehicle poor, quality of the first stage batteries short range of, operation and above all the cruel competition of the internal combustion engine vehicles which became so popular as they were very light, faster and running much more miles between refueling than those clumsy machines. Time has changed and they had never imagined that those …
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 May 31, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 31, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2021.
- 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.