Optical fibre back plane
CA 2049347 C · Owner: British Telecommunications Public Limited Company · Inventors: Lee, Peter; Peacock, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical fibre back plane (4) feeds incoming optical fibres (11) to exchange equipment. The optical fibre back plane (4) comprises a support member (5) attachable to the exchange equipment for pivotal movement about an axis (9). An optical interface is provided for connecting the incoming optical fibres to on-board optical fibres. The optical fibre back plane (4) is provided with support means (12) for supporting the incoming optical fibres (11) the support means extending parallel, and closely adjacent, to the axis (9).
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 April 10, 1990 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2012.
- 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.