Vision exercising apparatus
CA 2613223 C · Owner: Sahraie, Arash · Inventors: Sahraie, Arash
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vision exercising apparatus including a visual display device (1); a locating means (5) for locating the head of a user at a position to provide a substantially known relationship between the visual display device (1) and the field of view of the user; display position control means for actuating the visual display device (1) to display a predetermined pattern at a known display position which corresponds to a specific viewing area of the field of view of the user; user actuable response means (17) to enable a user response to be provided; further control means to control the display position control means to repeatedly display the predetermined pattern at the known display …
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 June 30, 2006 and granted August 19, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 30, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.