Video-assisted apparatus for hearing impaired persons
CA 2290437 C · Owner: Lapalme, Marie · Inventors: Lapalme, Marie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
25, The apparatus for hearing impaired persons of the present invention comprises a telephone receptionist style headset which is to be worn by a speaker person on her head, in, the conventional way. This headset is equipped with a frontwardly extending support arm, which carries at its front free end a miniature camera (and also optional microphone), targetting the speaker's mouth. The camera is linked by a wire to a transmitter having intrinsic, power means which transmits the images caught by the camera by means of a wireless signal, to receivers located remotely of the transmitter e.g. on students' desks in a , classroom. The receivers decode the signal and retransmits the images …
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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 May 26, 1998 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2020.
- 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.