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Expired Canadian patentCanada

Nmr magnet assembly with pole face parallelism adjustment

CA 1089006 A · Owner: International Business Machines Corporation · Inventors: Reinhart, Fritz M.; Kahwaty, Vincent N.; Double, Glen P.

CIPO record

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Abstract From the Canadian patent

Abstract Of The Disclosure A nuclear magnetic resonance (NMR) magnet assembly includes two pole faces spaced to provide a gap in which is established a uniform magnetic field. The pole pieces have pole faces that are flat and parallel. The pole pieces are mounted on support plates one of which is fixed and the other of which is movable about a pivot point with two degrees of freedom of movement in response to adjustment of two adjustable mechanisms. Each adjustment mechanism includes a differential screw that produces a transverse movement and a longitudinally inclined pin or pins that translates such transverse movement into a much greatly reduced longitudinal movement. The combination of …

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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 November 4, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 4, 1997.
  • 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 20, 1977
GrantedNovember 4, 1980
Term endedNovember 4, 1997
Patent numberCA 1089006 A
Classification (IPC)H01F7/00 +1 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedSep 20, 1977Patent grantedNov 4, 1980Term endedNov 4, 1997

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