Double-threaded tooth pick
CA 1287988 C · Owner: Hwang, Ying T. · Inventors: Hwang, Ying T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a tooth pick and more, particularly to a tooth pick having an end threaded in a double helix. The tooth pick of this invention comprises an enlongated bar including a double helix with the threads being wound in opposite directions about the bar, and a second end being tapered to a flat section and terminating with a hook.
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 August 27, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 27, 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.