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Expired Canadian patentCanada

Cassette and apparatus for recording and/or reproducing information

CA 1052467 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Turk, Everardus T. G.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A cassette for an apparatus for recording and/or reproducing information such as, music, speech, television pictures digital pulses, etc. and an apparatus for such a cassette. The cassette contains a tape which is suited for recording purposes at both sides, the cassette housing having openings in two opposite side walls for an information recording and/or read element which cooperates with the tape, whilst at least near each of the four corners of the cassette housing a taps guide element is disposed and furthermore the tape which comes from a winding hub, is passed over guide elements along a side wall, then crosses over substantially diagonally to a tape guide element near the diagonally …

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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 April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 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.
Filed—
GrantedApril 10, 1979
Term endedApril 10, 1996
Patent numberCA 1052467 A
Classification (IPC)G11B23/08 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedApril 10, 1979Term endedApril 10, 1996

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.