Method for making window frames or the like
CA 1259159 A · Owner: Urban G.M.B.H. & Co. Maschinenbau Kg · Inventors: Schuster, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the manufacture of welded corner joints between hollow plastic sections shaped parts are used which abut against the plastic sections during the heating-up operation and also during the welding process. In this way the result is achieved that the weld bead or plastic rim which forms during the welding, is pressed into the hollow cavity or into the hollow cavities so that a subsequent operation for the purpose of removing the weld bead is not necessary.
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 September 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 12, 2006.
- 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.