Apparatus for drawing fluid sample, components thereof, and a slide assembly for use therewith
CA 2136088 C · Owner: Greenfield, Walter · Inventors: Greenfield, Walter; Kearnes, Edward G.; Kemble, James E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus (20) for drawing a specimen of a body fluid such as urine from a sample tube (22). The specimen is drawn through a reusable slide assembly (322) for examination. The slide assembly (322) includes a glass enclosure (324) shaped to provide a viewing chamber (320) for use with a microscope. A sample tube (22) with a special plug (30) an elongated hollow probe, (70), and a solids collector chamber (28) with which a uniform amount of body liquid is provided for the specimen.
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 May 18, 1993 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2015.
- 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.