Spacing/levelling device
CA 2090631 A1 · Owner: Makow, Stan P. · Inventors: Makow, Stan P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the thin set laying of stone or ceramic tile tiles are set by floating them over a, uniformly applied screed of adhesive applied to a level substrate. In this invention combination spacing / levelling devices are used to equally space the corners of adjacent tiles and to maintain them at an equal elevation over the adhesive and substrate. The spacer/leveller device may comprise spacing fins and a guide for maintaining the corner of adjacent tiles flush while mortar is setting. The device works as a guide to facilitate level installation with uniform grout joints and it becomes part of the permanent fabric of the installation. Tiles are temporally supported by spacer/levellers at each …
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 1, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 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.