Remote learning system
CA 2244427 A1 · Owner: Guy, Frederick R. · Inventors: Guy, Frederick R.; Roberts, Ronald N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A remote learning system combines on-line service information and remote user information with a television signal designed to be received by students using multimedia personal computers. The combined signal is then transmitted to all of the students at their personal computers. At each personal computer the , received signal is separated into its component parts by a VBI modem for display or control on/off the personal computers. Each personal computer is capable of communicating back to a main server over a network such as a public telephone network. A broadcasting facility integrates the information transmitted over the network from a single student with the television signal.
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 January 21, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2019.
- 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.