Air turbulence blades for ceiling fans
CA 1280100 C · Owner: Cooke, Frank L. · Inventors: Cooke, Frank L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Supplemental blade attachments which are mounted to the end portions of the primary blades of conventional ceiling fans and which are of a configuration to establish a greater dispersion of air with respect to the fan by creating air turbulence which is directed radially outwardly in angular relationship with respect to the rotational axis of the fan.
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
- Granted February 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 2008.
- 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.