Cassette tape recorder
CA 1049989 A · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Naito, Morihisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cassette tape recorder, in which the presence or absence of a particular tape speed specifying means provided on a loaded tape cassette is detected by a detecting means, and with detection of absence of such specifying means a tape speed setting means for setting a recording or playback tape speed is coupled to a tape speed switching means to permit automatic switching of constant tape drive speeds in an interlocked relation to the operation of the recording or playback tape speed setting means.
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
- Granted March 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 1996.
- 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.