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Expired Canadian patentCanada

X-ray apparatus for providing panoramic radiographic projections

CA 1048165 A · Owner: Pennwalt Corporation · Inventors: Senghaas, Karl A.; Fleck, Horst G.; Hudson, Donald C.

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 radiographic apparatus is disclosed for providing continuous radiographs or x-rays if a selected portion of a subject lying in a horizontal position by simultaneously rotating an x-ray source and an x-ray film holder including an x-ray film about the subject. An x-ray film cassette is mounted in the film holder and while the film holder rotates about the subject the film, cassette is moved past an x-ray slit. The x-ray source and film holder are mounted for rotation with respect to a pivoted gimbal frame and apparatus is disclosed for shifting the frame a selected amount about its pivot point to shift the axis of rotation of the source and film holder with respect to the subject being …

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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 February 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 6, 1979
Term endedFebruary 6, 1996
Patent numberCA 1048165 A
Classification (IPC)H05G1/00

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedFeb 6, 1979Term endedFeb 6, 1996

Sources & verification

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