Construction log unit
CA 1134588 A · Owner: Sandstrom, Johnny · Inventors: Larsson, Hdkan; Marklund, Karl-Gerhard; Sandstrom, Johnny
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a wood log unit which in at least one end zone includes a portion with full cross-section while the portion inside thereof constitutes of at least one part with half a cross-section. The transition between the portion with full cross-section and the portion inside thereof consists of a recess, in which the portion with full cross-section fits and of a plane surface which in, principle is one quarter of the cross-sectional area for the full cross-section and extending perpendicularly to the longitudinal direction of the unit.
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
- Granted November 2, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 1999.
- 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.