Gas lighter with safety device
CA 2117586 C · Owner: Ichikawa, Toshihiro · Inventors: Ichikawa, Toshihiro; Saito, Masaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gas lighter with a safety device is provided with a resilient leaf which can be deformed between a locked state in which the depression of a pressing means is prevented and a lock-released state in which the operation of the pressing means is allowed and a slide member which is fitted around the resilient leaf and is movable between a first position where ignition operation is impracticable when the resilient leaf is in a locked state and a second position where the ignition operation is practicable. The slide member deforms the resilient leaf and renders it in a lock-released state at a third position which is reached during movement from the second position to the first position in …
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 August 29, 1994 and granted May 13, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2016.
- 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.