Hand-held playback device, system and method
CA 1082453 A · Owner: Microsonics Corporation · Inventors: Irvin, Ronald D.; Johnson, Reynold B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hand held audio transducer device transduces signals from a stationary record and includes a housing containing a transducer. The housing has an uncovered region in a portion of the housing or includes an opening serving to accomodate entry therein of a person's finer to pass into contact with Braille character. The transducer is carried by a rotatable body so that the transducer follows a path of the record. A member carried by the body is movable between projected and retracted positions for registering the transducer to follow the record path. A power supply and drive motor are provided to rotate the body and transducer. The transducing device can be used with a recording apparatus to …
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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
- Granted July 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 1997.
- 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.