Cassette for a printing ribbon for typewriters
CA 2016925 C · Owner: Uggetti, Sergio · Inventors: Uggetti, Sergio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cassette for a printing ribbon comprises a casing accommodating a supply spool which has a tube on which the printing ribbon is wound. An anti-unrolling element of plastics material comprises two portions of elongate shape which are connected by, means of an integral elastic hinge. The first portion performs a guiding and positioning function and is accommodated by means of a slot within the casing. The second portion has a blocking function with regard to the tube, and is movable on the outside of the casing, by means of the elastic hinge from an inoperative, position in which it is aligned with the first portion to an operative position in which it is rotated through 180° and is …
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 May 16, 1990 and granted September 5, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 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.