Building brick
CA 1065154 A · Owner: Lock Brick Limited · Inventors: Habegger, Carl; Habegger, Willie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A building brick having opposite major contact faces. One of such faces has a pair of longitudinally extending ridges along each side thereof. The other face has a pair of complementary depressions formed by a central longitudinally extending upstanding portion of height less than the height of the ridges, so that when similar bricks are engaged their, depressions and ridges interlock to align their viewable faces and restrain movement of the bricks in a transverse direction, while leaving a space at least .3cm thick and of width equal to at least 40 percent of the width of each brick between successive rows of bricks to contain bonding material. A similar vertical space is provided between …
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 October 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 30, 1996.
- 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.