Dictation apparatus that is a combination of a portable computer and a hand set
CA 2111298 C · Owner: Dictaphone Corporation · Inventors: Ellis, David A.; Heidari, A. Ryan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The combination of a portable computer and hand set for dictation and transcription. The hand set has a digital signal processor that compresses voice samples after voice signals have been converted from analog to digital. The digital signal processor is connected to a serial communication link through which communication can be held directly with a portable computer. Both voice samples and control data are carried by the same communication link. Controls are provided in the hand set for carrying out the normal dictation operations.
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 13, 1993 and granted July 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2015.
- 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.