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Expired Canadian patentCanada

Method and apparatus for cervical videoscopy

CA 1322591 C · Owner: Adair, Edwin L. · Inventors: Adair, Edwin L.

CIPO record

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Abstract From the Canadian patent

A simple yet highly useful cervical videoscope has been provided which can easily be used by the doctor to examine the cervix for cancerous lesions or other abnormalities. Also, because of the small size of the camera there is sufficient space between the camera and the blades of the speculum for inserting forceps and other instruments that may need to be used. By using the cervical videoscope in combination with a monochromator the physician can step the wavelength of light from one end of the light spectrum to the other until he observes florescence which identifies abnormal cells. Thereupon, he can destroy the cells by use of a laser beam. When he observes that no more florescence is …

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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 September 28, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 28, 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 28, 1989
GrantedSeptember 28, 1993
Term endedSeptember 28, 2010
Patent numberCA 1322591 C
Classification (IPC)A61B1/32 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedSep 28, 1989Patent grantedSep 28, 1993Term endedSep 28, 2010

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