Cordless telephone
CA 2368440 A1 · Owner: Siemens Aktiengesellschaft · Inventors: Buckers, Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cordless telephone with clock function which has a fixed part with mains power supply and a fixed-part time generator or clock generator and a mobile part with internal power supply and a mobile part time generator or clock generator, the mobile part having interrogation means for carrying out a clock time interrogation at the fixed part or conversely after an interruption of the respective internal power supply.
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 March 21, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 21, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2022.
- 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.