Method for accepting devices, and arrangement and equipment used therefor
CA 2537159 C · Owner: Gfk Telecontrol Ag · Inventors: Steinmann, Matthias
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an arrangement for determining a chronological acceptance of spaced-apart devices, comprising at least one transmitter unit which is disposed , on each device and from which a signal that identifies said device and has a predefined range can be transmitted. Several personal apparatuses are provided that are to be carried by one respective person and are fitted with a receiver for , the signals and a device memory for storing data contents of the emitted signals , during a given interval. The range of each transmitter unit defines a respective , transmission range. The transmission range and a receive sensitivity of the receiver are adjusted to each other in such a way …
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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 September 2, 2004 and granted November 18, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 2, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 2, 2026.
- 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.