Logic selection circuit
CA 2211060 C · Owner: Bimba Manufacturing Company · Inventors: Clark, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A logic selection circuit for selectively matching the transistor logic type of a first interfacing circuit with the transistor logic type of a second interfacing circuit. The logic selection circuit comprises a circuit latching means which latches the level of voltage signal present at the second interfacing circuit while receiving a signal from the first interfacing circuit. The logic selection circuit further comprises both an NPN transistor and a PNP transistor to ensure that the transistor logic type of the first interfacing circuit and the transistor logic type of the second interfacing circuit may be properly matched. The logic selection circuit disclosed may be utilized in a …
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 July 22, 1997 and granted September 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 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.