Spectacles set with detachable shelter frame
CA 2396508 C · Owner: Xie, Yiling · Inventors: Xie, Yiling
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spectacles set includes a primary spectacle frame and a detachable shelter frame adapted for mounting in front of the primary spectacle frame. The detachable shelter frame includes a shelter frame for supporting two auxiliary lenses and a pair of magnetic attaching arrangements connected to the shelter frame. Each of the magnetic attaching arrangements includes a supporting arm extending rearwardly from an inner side of the auxiliary lens of the shelter frame for riding over a primary bridge of the primary spectacle frame so as to securely mount the shelter frame in front of the primary spectacle frame and a magnetic seat which is connected to the supporting arm and extended to …
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 and granted July 16, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term 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.