Large vehicle entrance door safety system and method
CA 2025011 C · Owner: Lee, James Fallon · Inventors: Lee, James Fallon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A large vehicle entry door safety system which uses at least one fixed mark at a measured height and a position indicator attached to the door. By safely and clearly indicating the height of the large vehicle entry door by visual alignment of the position indicator with the fixed mark or marks vehicle operators, or door operators or both can be helped to avoid collisions with the door.
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 10, 1990 and granted June 13, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2012.
- 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.