Protective shield
CA 2127205 C · Owner: Therm-O-Disc, Incorporated · Inventors: Berestecky, Michael M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A protective shield for attachment to an electrical control on an electric water heater having a heating element extending into the water heater tank below the control. The shield has an upper section attached to the control and a depending lower section that shields the electrical connections to the heating element. The lower section is hinged to the upper section for upward swinging movement to a raised position providing access to the heating element. Latches on the opposite sides of the shield releasably hold the lower section in its raised position. Attachment of the shield to the control is effected by upwardly opening shield sockets that receive downwardly extending projections on …
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 June 30, 1994 and granted November 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 30, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 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.