Coupling purlin consisting of two or more wooden beams adjoining and overlapping each other longitudinally, as well as fastening element for joining two overlapping end areas of wooden beams for use as a coupling purlin
CA 2293230 C · Owner: Mattle, Paul · Inventors: Mattle, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a coupling purlin (1) for which two wooden beams (2 3) adjoining and overlapping each other longitudinally are connected to each other by fastening elements. The overlapping end areas of the wooden beams (2 3) are connected by means of screws (5) which are positioned at an acute angle in relation to the adjoining surfaces (6 7) of the wooden beams (2, 3). Said , screws (5) are screwed in along a plane situated at a right angle to the surfaces (6, 7).
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 June 5, 1998 and granted October 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2020.
- 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.