Pc server telecommunications power system
CA 2253105 C · Owner: Mitel Corporation · Inventors: Zorzella, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system within a PC server cabinet for receiving an externally supplied loop feed voltage (-48 VDC) and generating a ringing voltage (75 VAC) from the loop feed voltage. For universal applicability, the ringing voltage generator is preferably located in a 5.25 inch standard disk-drive housing of the cabinet allowing it to fit into any, PC. All required telecommunications signaling and power is thereby provided in the PC while limiting accidental user exposure to hazardous ringing signal voltage levels.
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 November 6, 1998 and granted May 7, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2020.
- 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.