Dental apparatus inducing multiple-use electrically-oscillated handpiece
CA 2184331 C · Owner: Ram, Zeev · Inventors: Ram, Zeev
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dental apparatus includes a handpiece graspable at one end by a user, and a head at the opposite end of the handpiece including a single nozzle, or a pair of nozzles connectible to a source of a liquid, a gas and/or powder. An electrical oscillating drive within the handpiece oscillates the head; and a manual fluid selector device manually selects the liquid, gas, and/or powder for conduction to the single nozzle or to the pair of nozzles.
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 August 28, 1996 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 2018.
- 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.