Apparatus for cleaning a ground
CA 2196960 C · Owner: Unilever Plc · Inventors: Windmeisser, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for cleaning a ground, comprising: - a frame provided with wheels;, - supply means arranged on the frame for supplying cleaning liquid to the ground;, - suction means arranged on the frame for drawing up the cleaning liquid applied to the ground wherein the suction means comprise one or more squeegees and wherein the squeegees comprise a strip of rubber material which is provided on the top with apertures which can be pressed close-fittingly over pin parts.
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 6, 1997 and granted October 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 6, 2019.
- 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.