Diving mask
CA 2122607 A1 · Owner: Sansalone, Salvatore Nino · Inventors: Sansalone, Salvatore Nino
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diving mask comprising: a supporting member (12) arranged for sealing engagement with the face of the user; a lens (10) means mounted in said supporting member (12) said supporting member (12), being dimensioned so that the lens means (10) is positioned near the eyes of the user with a portion of the nose extending forwardly of the lens means (10) to provide a low profile low, internal volume mask; and said lens means (10) being substantially spherical in configuration and having a single centre of curvature whereby the apparent magnification of images underwater is less than that observed through a conventional lens plate.
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 31, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 31, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 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.