1
James E Davis: Method of and apparatus for dispensing liquid. E I Du Pont de Nemours and Company, March 11, 1986: US04574850 (32 worldwide citation)

A liquid pipetting system for aspirating and dispensing small samples of fluid and diluents. The pipetting system consists of a coaxial needle serving as the pipette tip and a metering system to control the fluids. Precise dispensing of small amounts of liquid from the inner needle is made possible ...


2
Inglefield Samuel: Method of and apparatus for dispensing liquid by gas pressure. Ici, December 3, 1969: GB1172892-A (1 worldwide citation)

1,172,892. Dispensing liquids by gaseous pressure. IMPERIAL CHEMICAL INDUSTRIES Ltd. Jan. 15, 1968 [Jan. 27. 1967], No.4208/67. Heading F1R. A liquid sample compartment 4 is filled from an upper chamber 1, overflowing liquid collecting in chamber 2. Subsequently chamber 2 or both chambers 1, 2 are p ...


3
Davis James E: Methode et appareil de distribution de liquide, Method of and apparatus for dispensing liquid. E I Du Pont de Nemours And Company, Davis James E, MCCALLUM BROOKS & CO, November 7, 1989: CA1262708

TITLEMETHOD OF AND APPARATUS FOR DISPENSING LIQUID (DAVIS) ABSTRACT A liquid pipetting system for aspirating anddispensing small samples of fluid and diluents. Thepipetting system consists of a coaxial needle servingas the pipette tip and a metering system to controlthe fluids. Precise dispensing of ...