Magnetic-tape cassette
CA 1235484 A · Owner: N.V.Philips'Gloeilampenfabrieken · Inventors: Koken, Karel G.M.; Van De Kerkhof, Hubertus F.W.; Beyersbergen Van Henegouwen, Cornelis M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
16-, ABSTRACT:, A magnetic-tape cassette has a housing comprising a front wall with front openings behind which a part of a magnetic tape extends. The front wall can be convered by the major portion of a pivotal cassette cover which is, connected to side wallls of the cassette by cover flanges. Each of the side walls has a semicircular slot which is concentric with the pivotal axis of the cover which slot, engages a journal on the adjacent cover flange and is situated at that side of the pivotal axis which is remote from the front wall symmetrically relative to a plane of symmetry halfway between the major walls of the cassette. In each cover flange a straight slot is formed whose axis is …
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 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 19, 2005.
- 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.