Snow removal apparatus
CA 2133495 A1 · Owner: Pedersen, Donald A. · Inventors: Pedersen, Donald A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scraping implement that can be quickly coupled and uncoupled to a conventional self-propelled snow blower for the removal of snow from a driveway or sidewalk. Drop pins releasably hold the frame of the implement to opposite sides of a snow blower housing. The implement has a concave curved plow mounted on a frame for angle adjustments. A bolt extends through a swivel plate and the frame to hold the plow at the selected position. The frame is laterally adjustable to fit different sized snow blowers.
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 October 3, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 2016.
- 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.