A pipette for use with a pipette tip to aspirate and dispense a quantity of liquid, comprising a housing, a pipette tip mounting shaft extending from the housing to receive a pipette tip, a pipette tip ejector mechanism for ejecting the pipette tip from the mounting shaft, energy storage means, means...http://www.google.fr/patents/US6871557?utm_source=gb-gplus-shareBrevet US6871557 - Pipette device with tip ejector utilizing stored energy
Pipette device with tip ejector utilizing stored energy
