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Expired Canadian patentCanada

Recording system as well as record carrier and recording apparatus for use in the system

CA 1330591 C · Owner: Philips Electronics N.V. · Inventors: Roth, Rudolf; Lokhoff, Gerardus C.P.; Raaijmakers, Wilhelmus P.M.

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Abstract From the Canadian patent

Recording system as well as record carrier and recording apparatus for use in the system. A recording system (1) for recording information is revealed. The system comprises a record carrier (2) of an inscribable type and a recording apparatus (3). The record carrier is preconditioned with a control-information pattern (Fig. 3c; Fig. 3e) which indicates for which type(s) of information the relevant record carrier is intended. The recording apparatus comprises means (11 13) for, determining the type of information presented for recording means (12;, 10a, 82, 83) for reading the control information represented by the control-information structure, and control means (11) for inhibiting …

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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 5, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 15, 1989
GrantedJuly 5, 1994
Term endedJuly 5, 2011
Patent numberCA 1330591 C
Classification (IPC)G11B20/00 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedMay 15, 1989Patent grantedJuly 5, 1994Term endedJuly 5, 2011

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