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Expired Canadian patentCanada

Method and equipment for evaluating the flexibility of a human spine

CA 1297952 C · Owner: Diagnospine Research Inc. · Inventors: Gracovetsky, Serge

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 non-invasive method and equipment for the evaluation of the flexibility of the spine of a patient and as a result, of this evaluation, the detection and identification of possible mechanical injuries in the lumbar portion of this spine. According to this method, a string of skin-markers is fixed onto the skin of the back of the patient in the midline of his spine from at least cervical vertebra C7 down to at least sacral vertebra S3. Two other skin-markers are fixed onto the skin of the back of the patient in a bilateral and symmetrical manner on the crests of his ilium. The relative positions of all the skin-markers are then monitored and recorded as he flexes forward in this sagittal …

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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 March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 5, 1987
GrantedMarch 24, 1992
Term endedMarch 24, 2009
Patent numberCA 1297952 C
Classification (IPC)A61B5/00 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedOct 5, 1987Patent grantedMarch 24, 1992Term endedMarch 24, 2009

Sources & verification

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