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Expired Canadian patentCanada

Multi-channel pipetter

CA 1292452 C · Owner: Lyman, George · Inventors: Lyman, George; Mathus, Gregory

CIPO record

Overview

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 multi-channel pipetter has a U-shaped housing with horizontal upper and lower arms and an interconnecting hand grip portion. A plurality of nozzles that serve to support replaceable tips are mounted on the lower arm in a vertical orientation are connected by a flexible tubing that extends upwardly through the grip portion to a circular array of cylinders disposed horizontally in the upper arm. A piston-cylinder-volume setting mechanism is horizontally disposed in the upper arm. The mechanism is actuated by a trigger on the hand grip portion and the volume is controlled by a micrometer head which operates a stop within the upper arm. A tip ejector is mounted in the lower arm which provides …

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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 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 30, 1987
GrantedNovember 26, 1991
Term endedNovember 26, 2008
Patent numberCA 1292452 C
Classification (IPC)B01L3/02 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 30, 1987Patent grantedNov 26, 1991Term endedNov 26, 2008

Sources & verification

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