Passive action antitheft device
CA 2071603 A1 · Owner: Reggiani, Medardo · Inventors: Reggiani, Medardo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Antitheft device for vehicles comprising a central unit able to inhibit or enable normal function of the vehicle engine responsive to a coded radio signal emitetd by a protable unit activated by a radio signal emitted by the central unit, in which the central unit comprises a first memory, means to transmit at a first frequency a first coded radio signal CODE3 chosen at random in a list of codes stored in said first memory, means to receive and recognize a second coded radio signal CODE4; the portable unit consisting of a control and command device comprising a second memory, means to receive and recognize the first coded radio signal CODE3 emitted by the central unit means, to transmit at …
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 18, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 2014.
- 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.