Screening arrangement
CA 2176533 C · Owner: Freissle, Peter Helmut Franz · Inventors: Freissle, Manfred Franz Axel; Freissle, Peter Helmut Franz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides for a screen support frame component and for a method of converting a screen support frame having a surface, which includes providing a plurality of spacer elements on the support frame to project from the surface of the support frame and in which, the spacer elements support screening panels on the support frame such that the undersides of the screening panels are spaced from the surface of the support frame.
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 May 14, 1996 and granted March 7, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2018.
- 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.