Toothbrush and a toothbrush blank for use in the process
CA 1278654 C · Owner: Barman, Rolf · Inventors: Barman, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing a toothbrush with a toothbrush head (20, 21), which is provided with a first bristle-supporting head portion (20) and a second bristle-supporting head portion (21) utilises, as the starting point head portions which are pivotable relative to each other. In order to obtain easy and simple working, that is to say cutting and polishing, of the end plane of the bristle for the bristles (23) of the two head portions the head portions (20, 21) are bent after the bristles are installed parallel to each other at right angles to mutually aligned head portions to a "negative" angle d, so that cutting and polishing can take place in a common plane. Thereafter the head portions …
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 January 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2008.
- 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.