Ergonomic writing instrument
CA 2066091 A1 · Owner: Hochstetler, Michael A. · Inventors: Hochstetler, Michael A.; Hochstetler, Michael A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PATENT, Michael A. Hochstetler, ABSTRACT OF THE DISCLOSURE An ergonomic writing instrument comprising a writing instrument and a shell. The shell has a longitudinal axis and opposite ends and a hollow interior. The writing instrument is positioned within the shell with its operational end extending from one end of the shell. The shell has a groove therein extending from adjacent the one and to adjacent the other end. The groove has a bottom and an upstanding wall. The groove spirals around the shell. The bottom has a width greater than the size of one's fingers. The spiral has at least two turns between the opposite ends of the shell. The bottom extends from the wall toward the other end …
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 April 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2014.
- 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.