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Expired Canadian patentCanada

Magnetic disk apparatus

CA 1265242 C · Owner: Kabushiki Kaisha Toshiba · Inventors: Hattori, Toshiaki; Shimanuki, Machio

CIPO record

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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 magnetic disk apparatus has a base frame on which a magnetic disk having a head landing zone is carried. A magnetic head is supported by a carriage which is disposed on the base frame to be movable between a stop position where the head is located on the head landing zone of the disk and a position where the head is located on the outer peripheral edge portion of the disk. The carraige is urged by a first urging member to the stop position and is moved by a carriage drive mechanism. A lock member is disposed on the base frame to be movable between an engaged position where the lock member engages the carriage in the stop position to hold it therein and a disengaged position off the path …

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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 January 30, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 27, 1985
GrantedJanuary 30, 1990
Term endedJanuary 30, 2007
Patent numberCA 1265242 C
Classification (IPC)G11B21/02 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedSep 27, 1985Patent grantedJan 30, 1990Term endedJan 30, 2007

Sources & verification

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