Secondary eyeglasses which are intended for attachment to a pair of primary eyeglasses
CA 2266181 A1 · Owner: Linnartz, Olaf · Inventors: Linnartz, Olaf; Kirsch, Sam Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Secondary eyeglasses which are intended for attachment to a pair of primary eyeglasses. The secondary eyeglasses include a campanulate lens mounting strip having an arch-like upper portion, two outwardly extending lower leg portions an, upper surface and a lower surface. Hooks are provided on the upper portion for detachably securing the lens mounting strip to a nose bridge of a pair of primary eyeglasses. Hooks are provided on each of the lower leg portions for detachably securing the lens mounting strip to a frame front of a pair of primary eyeglasses. Secondary lenses are positioned on the upper surface of each of the lower leg portions of the lens mounting strip.
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 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 2021.
- 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.