Safety marker suspension device
CA 2015442 C · Owner: Coulthard, Robert · Inventors: Coulthard, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A safety marker suspension device which consists of a rod having a first end and a second end. The first end is attached to a safety marker. A plate is secured transversely to the second end of the rod, A housing is provided having a side wall defining an opening. The opening has a peripheral lip which matingly receives the plate. A spring is secured to and extends between the housing and the plate thereby, resiliently securing the rod to the housing. The housing is attached to machinery.
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 April 25, 1990 and granted September 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 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.