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Expired Canadian patentCanada

Damper mechanism for a recording and/or reproducing apparatus

CA 2386700 C · Owner: Sony Corporation · Inventors: Wakabayashi, Yoshihiko; Yamada, Tomohiro

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A recording and/or reproduce apparatus which employs a disc as a recording medium and in which a recording and/or reproducing unit is supported in a floating state via plural damper units and elastic members. The recording and/or reproducing apparatus includes a recording and/or reproducing unit mounted on a base member via plural damper units is and a closure member rotatably mounted on the base member for covering the recording and/or reproducing unit. Between the closure member and the recording and/or reproducing unit, there is mounted a spring plate for biasing the recording and/or reproducing unit towards the base member. When the closure member is at a position of sheathing said …

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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

  • Filed August 23, 1994 and granted July 1, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 23, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 23, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 23, 1994
GrantedJuly 1, 2003
Term endedAugust 23, 2014
Patent numberCA 2386700 C
Classification (IPC)G11B33/08 +1 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedAug 23, 1994Patent grantedJuly 1, 2003Term endedAug 23, 2014

Sources & verification

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