Teeth health care
CA 2037218 A1 · Owner: Sandler, Hedley · Inventors: Sandler, Hedley; Sandler, Hedley
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A timing device of the hourglass type includes a protective transparent housing which covers a glass receptacle, a support, and mounting means for mounting the housing pivotably to the support. Pivoting of the housing between two positions is thereby permitted in, which the respective chambers of the timing device overlie one another. The timing device is generally adapted for location in a bathroom, and is used to time an effective period for brushing the teeth.
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 February 27, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 27, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 2013.
- 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.