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Expired Canadian patentCanada

Correcting and bracing device specifically for the spinal column

CA 1323809 C · Owner: Biedermann, Lutz · Inventors: Harms, Jurgen; Biedermann, Lutz

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 correcting and bracing device is specifically used to stabilize an injured spinal column. Four screws with a threaded shaft element 7 and a receptor 8 are provided to allow for simple setting of the vertebrae as well as for subsequent re-adjustment. A first pair of threaded pins 45, 46 is provided to join respectively one rod with two of the screws at a first point of connection at their receptor, as well as a second pair of threaded pins 29, 30 whereof respectively one may be connected with two of the screws at a second point of connection placed opposite to said first point of connection.

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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 November 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 13, 1989
GrantedNovember 2, 1993
Term endedNovember 2, 2010
Patent numberCA 1323809 C
Classification (IPC)A61F5/04 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJuly 13, 1989Patent grantedNov 2, 1993Term endedNov 2, 2010

Sources & verification

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