Lighting fixture having a parabolic louver
CA 2180712 C · Owner: Degelmann, Paul G. · Inventors: Degelmann, Paul G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The lighting fixture according to the invention includes a fixture housing having a longitudinal axis and means for supporting a fluorescent lamp in the housing. Side reflectors are provided which extend parallel to the longitudinal axis of the housing on either side of the lamp. A plurality of cross vanes and two end vanes are positioned below and perpendicular to the longitudinal axis of the lamp. Each cross vane has a top surface of a generally V-shaped configuration and reflector surfaces extending from the top surface. The reflector surfaces are concavely curved with a radius of curvature which varies along the width of the cross vane. The end vanes also include a generally Vshaped top …
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 July 8, 1996 and granted April 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2018.
- 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.