Tooth brush
CA 1198254 A · Owner: Nahum, Sylvain · Inventors: Nahum, Sylvain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Tooth brush having a handle and a bristle head with supports on which tufts of bristles are secured the supports automatically coming into motion when the user, after applying the bristles against his teeth gives the brush a reciprocating rectilinear movement the supports being of a first and of a second type. The supports of the first types are mounted on the housing to allow oscillation of the tufts of bristles thereof in a plane which is perpendicular to the housing when the user applies the aforesaid reciprocating rectilinear movement. The supports of the second type on the other hand, are mounted on the housing to allow rotation of their tufts of bristles about their axis of symmetry. …
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
- Granted December 24, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2002.
- 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.