D.i.s. k.v. tester
CA 2195587 A1 · Owner: Poag, Terry D. · Inventors: Mcgill, David W.; Poag, Terry D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus connectable between the secondary winding tower of a Direct Ignition Coil output and the high voltage lead to the spark plug and/or between the spark plug and the high voltage lead to provide a visual indication of an electric arc generated by current passing through the apparatus which has a predetermined air gap encased in a material which is visibly clear, and having high dielectric characteristics. An apparatus connectable by means of male and female receptacle located at either end of the housing respectively, and forming a means of connection in series with the component or circuit to be tested, these receptacles shall also form an electrode function in series with the …
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 January 21, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2019.
- 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.