Structure of pencil assembly elongated by combination
CA 2305087 A1 · Owner: Lee, Chin-Kun · Inventors: Lee, Chin-Kun
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A structure of pencil assembly which can be elongated by combination for the purpose of saving resource and realizing environmental protection. The pencil assembly is comprised of a main shank provided with a fixing annular member on one end thereof and a connecting shank, provided with a fixing collar on one end thereof by mutual connecting, of the fixing annular member and the fixing collar the main shank and, the connecting shank are connected with each other and convenience of, holding by a user is obtained. And by such mutual connecting a pencil, can be totally used, and the objects of saving resource and realizing environmental protection can be achieved.
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 April 13, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 13, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 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.