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Expired Canadian patentCanada

Method and means for aligning focusing mirrors in an optical spectrometer

CA 1096210 A · Owner: Baxter Travenol Laboratories, Inc. · Inventors: Lessner, David L.

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Abstract From the Canadian patent

The invention is used in an optical spectrometer having a monochromator with entrance and exit ports and a grating, and relates to an improved method and means for aligning a focusing mirror so that an optical beam can be easily and accurately focused on the entrance or exit ports of the monochromator or on its grating. The mirror is mounted in a block with bores adapted to receive bushing assemblies each with a plurality of pairs of matching female and male circular spring rings positioned about a shaft for contact in expanded condition with the bore. Conical surfaces of the rings are in wedging contact with each other each, of the rings being split by a slot extending entirely through the …

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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 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 24, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 4, 1978
GrantedFebruary 24, 1981
Term endedFebruary 24, 1998
Patent numberCA 1096210 A
Classification (IPC)G02B7/18 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJan 4, 1978Patent grantedFeb 24, 1981Term endedFeb 24, 1998

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