Toothbrush
CA 2018969 C · Owner: Reichert, Gottfried · Inventors: Reichert, Gottfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A manually operable tool for cleaning the teeth on both sides the tongue and the cheek side at the same time. The toothbrush comprises twin-brushes which face each other and are on twin flexible brush-holders. On the brushholders are also the twin-brushes vertical positioners. The twin flexible brush-holders are in the twin hollow toothbrush handle partly mounted. That toothbrush handle has also cleaning slots which also may prevent the operator's hand or fingers from slipping.
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 June 13, 1990 and granted November 8, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 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.