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Expired Canadian patentCanada

Multiple sample pipetting apparatus

CA 1049976 A · Owner: Salk Institute For Biological Studies (The) · Inventors: Byrd, William J.

CIPO record

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Drawings and full text

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

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Abstract From the Canadian patent

A Multiple Sample Pipetting Device is disclosed which is adapted to remove small predetermined volumes of liquid from a plurality of sample wells arranged in a compact rectilinear array, or conversely to transfer small predetermined volumes of liquid from one large reservoir container to a plurality of sample wells arranged in the same array. The apparatus has a plurality of small tubes extending downwardly with the upper end portion communicating with reservoirs that have a predetermined volume. A flexible diaphragm extends across all of the reservoirs, and the upper ends thereof are in communication with a common manifold chamber. The application of positive or negative pressure moves 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 March 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 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—
GrantedMarch 6, 1979
Term endedMarch 6, 1996
Patent numberCA 1049976 A
Classification (IPC)B01L3/02 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMarch 6, 1979Term endedMarch 6, 1996

Sources & verification

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