Expired Canadian patentCanada
Plug-in device for an electric toothbrush drive
CA 2135909 C · Owner: Merbach, Lothar · Inventors: Merbach, Lothar
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plug-in device for an electric toothbrush has a housing and a motion converter arranged in the housing.
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 March 12, 1994 and granted July 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 12, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 12, 1994
GrantedJuly 14, 1998
Term endedMarch 12, 2014
Patent numberCA 2135909 C
Classification (IPC)A61C17/32 +2 more
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.