Divisional step dot printing device
CA 2011689 C · Owner: Fujitsu Limited · Inventors: Tanida, Toshifumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A divisional step dot printing device for a wire dot printer in which a plurality of dot pins of the dot printing head is divided into a plurality of groups of a sequence of dot pins and is driven in a sequence of divisional dot printing steps. Each of the divisional dot printing steps is carried out by a combination of groups of dot pins which substantially cover the center line of the platen.
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 March 7, 1990 and granted October 18, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 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.