Portable spa cover
CA 2120674 C · Owner: Watkins Manufacturing Corporation · Inventors: Watkins, Jeffrey King; Cumiskey, Walter Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable spa including a cover having two semi-circular, rigidly molded, interlocking halves designed to, conform with the contour of the rim of the spa. The cover halves each have an undersurface and outer surface with a plurality of radial support ribs being formed in the undersurface to provide strength and rigidity. Elongated tapered male and female hinge members are integrally molded as part of the respective cover halves and permit the cover halves to be engaged and disengaged from one another when at an angle with respect to each other while remaining, firmly locked together when each half lies horizontally. the horizontal engagement is further facilitated by resilient fingers …
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 April 6, 1994 and granted January 20, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 6, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 6, 2016.
- 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.