Switch for operating an electric device, in particular a radio remote control device
CA 2111516 C · Owner: Bredow, Wolfgang · Inventors: Bredow, Wolfgang; Burchard, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A switch for operating an electric device the, switch having a released position in which the device can be switched on or off, and a locked position in which switching on of the device is prevented in combination, with a removable key element including a key insertable into the switch and displaceable for placing the switch in a selected one of the released and locked positions. The switch includes a function element fixedly disposed within the electric device, and an actuating element for switching the electric device on and off seated on the, outside of the device and in operative connection with the function element. The key element is composed of a cap-like slip-on element to which the …
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 15, 1993 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2015.
- 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.