A support for a garbage chute cleaning apparatus
CA 2185755 C · Owner: Skyscraper Cleaning Services Inc. · Inventors: Bate, Douglas Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A support for a garbage chute cleaning apparatus includes a cart having ground engaging wheels. Outrigger legs are provided for anchoring and providing lateral stability to the cart. A rotatably mounted reel is provided having a length of line mounted on the cart. Two telescopically extendible vertical support columns are mounted on the cart. A telescopically extendible horizontal cross-beam extends between the two vertical support columns. The horizontal cross-beam has a remote end with a line guide which receives line from the rotatably mounted reel. A Counterweight is mounted to the cart opposite the remote end of the horizontal cross-beam. This provides a counterbalance to a garbage …
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 17, 1996 and granted January 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 17, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 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.