Lightpen
CA 1263263 C · Owner: Persson, Sven Anders Roland · Inventors: Persson, Sven Anders Roland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical cable intended for use in reading an optical information carrier comprising a light conductor for transmitting light from the carrier to a light-sensitive receiver. In order that the cable is easy to bend and for obtaining good resolution, the light conductor is manufactured from an easily bendable material. The end portion of the light conductor facing away from the light-sensitive receiver comprises a light conductor having a light reception angle which is less than the corresponding angle of the remaining portion of the light conductor.
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 November 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 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.