Pin board matrix
CA 1261420 A · Owner: Nippon Telegraph & Telephone Corporation · Inventors: Hujioka, Nobuteru; Hosogai, Masao; Imori, Yasutaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A matrix switch comprises a laminated board including two insulative substrates, provided with a plurality of parallel conductive X-patterns and X-patterns made, or resilient metal wires, respectively. The laminated board has a plurality of through holes each penetrating, both the two substrates at positions corresponding to, intersections of the respective X and Y-conductive patterns. When a short plug is inserted into a selected through hole, the X and Y-patterns corresponding to the selected through hole are electrically connected to each other via the short plug. The substrates have a plurality of parallel guide grooves for receiving the wire patterns.
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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
- 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.