Foil stretching plant
CA 2035920 A1 · Owner: Hollerwoger, Alois · Inventors: Hollerwoger, Alois; Bloo, Johann; Romauer,Ewald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Foil stretching plant comprising a plurality of zones more, particularly a heating zone I, a stretching zone II a, stabilising zone III and a cooling zone IV. The individual zones I, II, III and IV are designed as modules which can be installed and removed individually. Of these at least the, module designed as a stretching zone II can be installed upside down and can succeed in upside down position a first stretching zone II. In that arrangement the second stretching modulecan replace a stabilising zone III.
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 February 7, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2013.
- 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.