Material holding apparatus with integrated finger mount
CA 2048859 C · Owner: Bull, Charles L. · Inventors: Bull, Charles L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A materials holding apparatus consisting of a receptacle flange and mount for use in the practice of dentistry capable of bringing the necessary implements to the operation at hand and making the requisite materials available for timely use which can, be worn on the finger or thumb of both left-handed and right-handed individuals with equal ease and remains stable and does not slip and slide around the finger or thumb.
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 August 9, 1991 and granted February 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 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.