Improved vent for enclosures
CA 2078464 C · Owner: S&C Electric Company · Inventors: Steele, Edward A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vent arrangement is provided for enclosures that prevents the entry of water into the, enclosure and that also prevents the penetration of a pry bar or probe wire. The vent arrange-, ment includes a first predetermined pattern of openings of predetermined shape and dimensions, provided at the exterior wall of the enclosure. The dimensions of the openings and the spacing, between the openings are determined relative to the pry bar and the material in which openings, are formed, such that the pry bar cannot fully enter the openings and such that the portion of, the pry bar that can be applied to the openings does not cause any substantial deformation of, the material surrounding the …
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, 1992 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2014.
- 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.