Material and operability optimizing paper clip
CA 2066032 A1 · Owner: Walker, Myles M. Jr. · Inventors: Walker, Myles M. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A paper clip is formed of a continuous band of material, and comprises an outer clamping frame an inner, clamping frame, and a pair of torsion members. The outer clamping frame is of a substantially triangular gross geometry and has a pair of transverse bridge members and outer clamping portions which extend from the respective transverse bridge members and converge at an outer reinforced tip. The inner clamping frame is also of a substantially triangular gross geometry and has inner clamping portions which converge at an inner reinforced tip. Each torsion member extends substantially perpendicularly from a respective transverse bridge member and continues into a respective contoured …
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 October 5, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2012.
- 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.