Apparatus for measuring the flexural resistance of ribbed patterns
CA 2009027 C · Owner: Crespi, Giuseppe · Inventors: Crespi, Giuseppe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for measuring the flexural resistance of ribberd patterns comprises a clamp for clamping a die-cut and ribbed cardboard sheet which, clamp is so driven as to cause the ribbed portions of the cardboard sheet to engage against one or more rollers which are coupled to corresponding load cells adapted to measure the force necessary for folding the ribbed portions and display this force on a display.
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 January 31, 1990 and granted December 1, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 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.