System, apparatus, and method for removing dust and debris from a partially obstructed area adjacent a substantially horizontal surface
CA 2344461 A1 · Owner: Vanderlinden, Roger · Inventors: Vanderlinden, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for removing dust and debris from a partially obstructed area adjacent a substantially horizontal surface comprises an apparatus movable along the substantially horizontal surface adjacent the partially obstructed area and having a dust and debris receiving structure. The dust and debris receiving structure is supported in close proximity to the substantially horizontal surface, to thereby position the dust and debris receiving structure to receive dust and debris. An air stream generator having a movable outlet disposed exteriorly to the apparatus for effecting a directed stream of air disposed exteriorly to the apparatus and aimed at dust and debris in the partially obstructed …
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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
- Filed April 10, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2023.
- 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.