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Expired Canadian patentCanada

O tomography apparatus comprising a parallelogram suspension system

CA 1189640 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Span, Francis J.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

In a radiation apparatus an element which is carried, by a balanced suspension system is to be positioned relative, to an object. The element and a counterweight are carried by a parallelogram suspension system in order to increase the adjusting accuracy and the freedom of movement. In order to obtain a smooth, static movement, even during rotation of the entire suspension system, the positioning function and the supporting function of one of the pivotal supports are separated each func-, tion being performed by a separate pivot.

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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 June 25, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 26, 1982
GrantedJune 25, 1985
Term endedJune 25, 2002
Patent numberCA 1189640 A
Classification (IPC)A61B6/02 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedMay 26, 1982Patent grantedJune 25, 1985Term endedJune 25, 2002

Sources & verification

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