Membrane keyboard with identifying connectors
CA 1268233 C · Owner: Eac Technologies Corp. · Inventors: Noens, Richard Harold; Russell, Leonard Eugene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A membrane keyboard is provided having a first and second plurality of connectors extending therefrom. The first plurality of connectors is attached at one end to a number of switches on the keyboard and at the other end to a processing circuit apart from the keyboard. One end of the second plurality of connectors is also connected to the processing circuit. A third set of connectors is utilized to connect the ends of the second plurality of connectors on the keyboard in a manner to identify the keyboard to the processing circuit.
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
- Granted April 24, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 2007.
- 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.