Ground covering element
CA 1205315 A · Owner: Von Langsdorff (F.) Bauverfahren G.M.B.H. · Inventors: Barth, Gunter; Von Langsdorff, Fritz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ground covering element which provided as a normal ground covering, element for overlaying entire areas has projections and recesses at all sides for interlocking engagement with adjacently laid ground covering elements comprising a unitary, rigid body, with a pair of inner side surfaces arranged at generally right angles to each other to form an inner angle; a pair of outer side surfaces arranged at generally right angles to each other to form an outer angle, the angles having a common bisector; two end surfaces each, extending generally perpendicularly between respective inner and outer side surfaces; and two gaps provided in the top surface of the element to form lines of structural …
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 June 3, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 3, 2003.
- 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.