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Expired Canadian patentCanada

Means and structure for prevention of cross contamination during use of dental camera

CA 1313097 C · Owner: Bush, Charles S. · Inventors: Bush, Charles S.; Cooper, David H.

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 sheath is provided which prevents the dental camera itself from coming into contact with the patient, while allowing the dental camera to function properly. Such sheaths are dispensed on a perforated role, either end to end, or side to side. Alternatively, each sheath is individually packaged in a tear away casing, allowing the sheath to remain sterile yet, being readily accessible for use.

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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 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 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.
FiledSeptember 30, 1988
GrantedJanuary 26, 1993
Term endedJanuary 26, 2010
Patent numberCA 1313097 C
Classification (IPC)A61B1/24 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedSep 30, 1988Patent grantedJan 26, 1993Term endedJan 26, 2010

Sources & verification

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