Construction board
CA 2092970 A1 · Owner: Lee, Eun - Hwan · Inventors: Lee, Eun - Hwan; Lee, Eun - Hwan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A construction board having at its outer surface a plurality of nailing portions comprising longitudinal and lateral partition lines, If desired, the partition lines are formed to sect the construction board into equal multi-section parts such as two parts, three parts or four parts. At each partition line, a plurality of nailing points are formed so as to drive fasteners such as nails, screws and staples in the construction board easily and correctly. The construction board also has longitudinal and lateral perforated lines adapted to cut the construction board to a desired length and a desired width. Accordingly, it is possible to provide a construction board having a desired size. -12-
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 March 30, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 30, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2015.
- 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.