Wireless multi-handset telephone system with integrated video monitoring accessories
CA 2452535 A1 · Owner: Ryley, Gordon · Inventors: Ryley, Gordon; Tischler, Ralph; Wong, Allan Chi-Yun
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wireless multi-handset telephone system with integrated video monitoring. A speakerphone base unit, at least one camera module at least one combination , video/voice handset, and at least one voice handset operate together such that voice and data are, transmitted (i) between the speakerphone base unit and the at least one camera module and, (ii) between the speakerphone base unit and the at least one voice handset and video images, are transmitted from the at least one camera module to the at least one combination, video/voice handset.
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 December 4, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 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.