A hand-held pipette includes a piston driven by an actuator assembly contained within a housing having first and second mutually spaced non-adjustable stops. The actuator assembly is subdivided into first and second sections respectively provided with first and second contact surfaces. The actuator assembly...http://www.google.fr/patents/US20050262951?utm_source=gb-gplus-shareBrevet US20050262951 - Hand held pipette
Numéro de demande: 10/855,690 Numéro de publication: US 2005/0262951 A1 Date de dépôt: 27 mai 2004 Brevet délivré: US7284454 ( Date de délivrance 23 oct. 2007)
