Hand held safety siren
CA 2002226 A1 · Owner: Halperin, Rachel · Inventors: Halperin, Rachel; Halperin, Rachel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a hand held alarm device for personal use. The alarm device comprises a housing having an alarm circuitry contained therein and a activating switch located thereon. The housing has an attachment strap for releasably attaching the alarm device to the hand such that the activating switch is maintained in a position to be within reach of the fingers, both during and after a fright response. In an aspect of the invention, the alarm device includes a deactivating switch physically separated from the activating switch for deactivating the alarm device.
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 November 3, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 3, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 2011.
- 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.