Spectacles
CA 2094698 A1 · Owner: Houmand, Jan · Inventors: Houmand, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In spectacles having two lenses (3) each connected to a temple, (2) by means of a temple mounting member (6) and a bridge (7) interconnecting the lenses, the temples (2) the temple mounting, members (6) and the bridge (7) are made of wire material. For holding the temple mounting members (6) and the bridge (7) firmly together with the lenses (3) the pieces of wire material which form the temple mounting members (6) and the bridge (7) are curved or bent to provide eyelets (4, 5) which support an extended part of a screw connection, e.g. the head of a yielding plastic screw (8 9), which is screwed into a threaded bore (11) formed directly in the lenses.
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 October 22, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 2013.
- 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.