Screw band
CA 2209743 C · Owner: Lin, Jack · Inventors: Lin, Jack
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A screw band can hold screws of different diameters having a body of any length provided with notches in two longitudinal sides so the band can be moved by a screw driving tool. The band has a plurality of screw holes respectively defined by an annular wall extending down from the band surface. The annular wall has a plurality of small notches for screws to be driven through the screw holes smoothly. Valves extend inward from an inner surface of the annular wall for supporting a screw planted in each screw hole. The valves may be any type and may bend to form a contact-with-each-other condition or a non-contactwith-each-other condition and to produce elasticity for securely supporting …
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 July 14, 1997 and granted June 19, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 2019.
- 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.