Suction swab
CA 2029283 C · Owner: Hanifl, Paul H. · Inventors: Hanifl, Paul H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable suction swab comprises an elongate hollow stem having opposite ends; means at one end of the stem for connecting the stem to a source of suction means for controlling suction within the stem and an enlarged, resilient tip mounted on the other end of the stem. The tip has a longitudinal central channel accommodating the stem and at least one transverse aperture connected to the central channel. A hole in the steam is in registration with the aperture which is larger in cross-section than the hole and means secures the tip to the stem.
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 November 5, 1990 and granted August 16, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2012.
- 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.