Marking device with vibrating yieldable writing tip
CA 2072716 A1 · Owner: Hart Enterprises, Inc. · Inventors: Christen, Richard P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A marking device which includes a hand-held housing and electrically powered means for vibrating the housing. An ink cylinder having a writing tip at is end is slidably supported within a cartridge casing, and a spring biases the cylinder outwardly on the casing. The casing is supported on the housing of the marking device.
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 June 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2014.
- 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.