Litter vacuum
CA 2440569 A1 · Owner: Minuteman International, Inc. · Inventors: Palmer, Gary E.; Mondigo, Jesse V.; Strickland, Timothy A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mobile litter pickup vehicle has a pair of forward corner brushes independently mounted on articulated arms so that the brushes may be moved in the, event an obstacle is encountered to avoid damage to the brushes or to the object. An, air recirculating system is employed for prolonging the life of the final outlet filter, and an impermeable trash bag may be used for disposing of the contents of a primary, scrim collection bag.
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 September 12, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 12, 2025.
- 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.