Multiple wireless switching units embedded in a switching system
CA 2189281 C · Owner: At&T Corp. · Inventors: Bales, Bruce Merrill
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Embedding one or a plurality of wireless switches into a switching system. The wireless switches are both physically and logically integrated into the switching system. The switching system performs the complex switching operations. Physically, each wireless switch emulates link interfaces in its connections to the switching system's communications control and data media. Logically each of the wireless switch units communicates with a control processor controlling the operations of the switching system as if each of the wireless switches was a set of individual station sets. Each wireless switch is assigned a set of wireless sets. Each of the wireless sets has a unique telephone number …
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 31, 1996 and granted April 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 31, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 2018.
- 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.