Underwater visibility device
CA 2590910 C · Owner: Williamson, Lila Marie · Inventors: Williamson, Lila Marie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The underwater visibility device 10 may be used for improved visibility viewing of an underwater device 40 in an underwater diving environment. A closed container 12 may have a flexible portion 18 formed of a relatively transparent material with respect to an underwater device 40 to be viewed. A fluid 14 that may be relatively transparent with respect to the underwater device 40 may be contained in the closed container 12. The closed container 12 may be attached to the underwater device 40 in a position for viewing the underwater device 40 through the closed container 12.
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 December 12, 2005 and granted July 8, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.