Micro floppy disc cassette
CA 1185009 A · Owner: Sony Corporation · Inventors: Nemoto, Tsuneo; Sawa, Tetsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved disc cassette having a shutter-closeable aperture, wherein the shutter is moved against the force of a confined coil compression spring into an aperture-open condition and is there latched by a transversely deflectable latch pawl normally biased into latching position and operable by manual pinching of the cassette to release the pawl to permit the spring to return the shutter to the aperture-closed position.
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 April 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 2002.
- 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.