Alarm device, especially for alarm clocks or timers
CA 1234906 A · Owner: Braun Aktiengesellschaft · Inventors: Hoffmann, Harald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An alarm device especially suitable for alarm clocks or timers is described, whose alarm signal can either be interrupted for a certain period of time or shut off by an acoustic signal for example that, formed by the human voice. As a result of its low power consumption the alarm device according to the invention can also be used in battery-powered devices; when installed in an alarm clock or timer inexpensive mass production is also made possible by using already existing integrated circuits. The alarm device according to the invention is functional even when the acoustic signal produced by the user is only of very short duration or when the alarm signal is delivered as a continuous tone. …
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
- Granted April 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
- 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.