3-dimensional centerfold
CA 2393417 A1 · Owner: Hewitt, Mike · Inventors: Hewitt, Mike
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A "3-Dimensional Centerfold" is created when the photographer takes a still photograph for the object to be highlighted in the Centerfold using a camera, which is specially equipped with a Blue Lens and a Red Lens. When the photograph is developed the Centerfold object is seen to have a double image in blue and red. The 3-Dimensional effect occurs only when the person looking at the Centerfold wears 3-Dimensional glasses, which also have a Blue Lens and a Red lens.
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 30, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 30, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2024.
- 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.