Expandable folder
CA 2486391 C · Owner: Lockhart, William E. (Deceased) · Inventors: Lockhart, William E. (Deceased)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An expandable folder is disclosed for holding reports. The folder is formed of a single sheet of material. The folder includes a back a front, two sides and , a flap. , The sides are folded inwardly and the front is folded upwardly to form a pocket. Tabs , on the front fit into slots in the sides to hold the folder together. Two label sections , are provided to allow the folder to be marked with identifying information.
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 October 25, 2004 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 25, 2024.
- 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.