Elevator hoist machine installation apparatus
CA 2447396 C · Owner: Miller, Michael G. · Inventors: Cercone, Alessandro; Corcoran, Daniel; Miller, Michael G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus or tool for installing an elevator hoist machine to a support at the , top of the vertically extending guide rails. The apparatus includes means for imparting , vertical movement to the hoist machine and horizontal movement thereto at the upper , ends of the guide rails to enable hoist machines to be installed in areas with limited , ceiling height.
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 29, 2003 and granted October 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 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.