Interactive communication device
CA 2484709 A1 · Owner: Besson, Bernard · Inventors: Besson, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the invention, a server system (1) is connected to a number of remote display means (5-7) for messages for broadcasting by means of a communication network (8). The audiovisual messages (4) received from the server system (1) are made perceptible for the clients (2 3). The clients can send coded instruction signals (16) to a first access means (5a-7a) located near a display means (5-7), by means of portable client badges (14 15), which are transmitted to the server system (1) which then establishes a back-up communication (18) with the client (2) for example by means of the portable telephone thereof. The client can thus simply establish communication and when the server system …
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 2, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2025.
- 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.