Apparatus for cleaning in particular teeth
CA 1269258 C · Owner: Ghedini, Luigi · Inventors: Grillini, Mauro; Rubbini, Claudio; Ghedini, Luigi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is an apparatus for cleaning in particular teeth, that operates in accordance with the mechanical sandblasting principle and is equipped with a barrel provided with a multiple nozzle and with, means of connection identical to those of a dentistry turbodrill. In order to obtain a gas-powder mixture that is permanently constant or, through control means is rendered variable, the handgrip of the barrel is fashioned hollow and divided into a receiving chamber a swirl precombustion chamber and a swirl chamber communicating via elements having a calibrated passage hole. The powder and a small quantity of gas are inserted into the receiving chamber, while the major quantity of gas …
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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
- Granted May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- 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.