Barrier wrapper
CA 2005674 C · Owner: Herd, Douglas M. · Inventors: Herd, Douglas M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wrapper for parking area gates or construction barriers is disclosed. The unique wrapper consists of an elongate piece of flexible generally paper-like material of sufficient length and width to wrap around a barrier arm. Indicia of diagonally spaced blocks of contrasting colours are affixed to the wrapper in a parallel manner. When a barrier member is replaced, the covering is wrapped about the barrier member and secured to itself thereby producing instantly a new barrier for re-operation of the parking area or protection of the construction site. The invention eliminates the cost of expensive cuts of wood and meticulous painting each time the barrier is broken.
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 December 15, 1989 and granted March 29, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2011.
- 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.