Liquid aspirating pipette and dispensing system
CA 2041007 A1 · Owner: Allen, Terry W. · Inventors: Allen, Terry W.; Allen, Terry W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A manually operable liquid aspirating, pipette, and associated dispensing apparatus are, disclosed. The pipette includes a manually operable aspirator arrangement which permits collection and aspiration of a liquid sample. A pull-back mechanism is provided to facilitate convenient introduction of air into the pipette subsequent to aspiration of the liquid sample. Notably, the pipette includes a secondary actuating member which permits operation of the pipette by the associated dispensing apparatus. Thus after, aspiration of a liquid sample, the pipette may be positioned in the dispensing apparatus with the, apparatus operated to provide controlled metered, dispensing of the sample in the …
Read the whole patent
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
- Filed April 23, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.