Staircase stringer assembly
CA 1315068 C · Owner: Murdaca, Domenico · Inventors: Murdaca, Domenico
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a staircase stringer assembly having only three main structural parts which may all be formed from extruded metal stock. The components of the assembly include a stringer member having an integral outwardly open channel which extends longitudinally the entire length thereof. The assembly according to the present invention also comprises a riser member having flanges for slidable engagement with the channel of the stringer member. A run member completes the assembly. The run member is adapted to cooperatively engage with the riser member and provides a substantially planar and horizontal surface for supporting a single stair tread or step placed thereon. The …
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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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- 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.