Expired Canadian patentCanada
Display arrangement
CA 2067467 C · Owner: Pitney Bowes Inc. · Inventors: Miller, Roland G.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A display device has a reverse polarity LCD panel separated from a cavity by a light diffuser. A plurality of LEDs mounted in said cavity are interconnected to a common constant current source.
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 28, 1992 and granted January 6, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 28, 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.
FiledApril 28, 1992
GrantedJanuary 6, 1998
Term endedApril 28, 2012
Patent numberCA 2067467 C
Classification (IPC)G02F1/13 +2 more
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.