Eyeglasses maintenance kit
CA 2313627 C · Owner: Lee, Ching-Chang · Inventors: Lee, Ching-Chang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An eyeglasses maintenance kit includes a hollow casing body (1), a pincer (2), and a screw driving tool bit (3) . The casing body (1) has an open top end (11) and a bottom end (12) opposite to the top end (11) and, includes upright front and rear walls (16 17) and, opposite lateral walls (13) that interconnect the front and rear walls (16, 17). The bottom end (12) of the casing body (1) is formed with a bit engaging member (14). The pincer (2) is mounted removably in the casing body (1) via the open top end (11) of the casing body (1), and includes a pair of resilient clamping arms (23) with upper and lower end portions (231 232), and a, bridging portion (21) that interconnects the upper …
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 20, 2000 and granted November 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2022.
- 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.