Life-saving alarm for persons in a water medium
CA 2054532 A1 · Owner: Valdez, Alfredo T. D. · Inventors: Valdez, Alfredo T. D.; Valdez, Alfredo T. D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An alarm system for detecting persons who accidentally fall into the water and who are eventually in the water in an emergency situation that requires help of the kind, comprising a signal transmitter means including an activating means for actuating said transmitter means which is sensitive to a pre-determined condition, said transmitter means being attached to the body of the user by removable means of attachment, and, at least, a receiver means for receiving said signal and capable of identifying the signal and controlling an alarm device disposed at a place where help is needed.
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 October 30, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 30, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2013.
- 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.