Optical fibre customer lead in
CA 2184615 C · Owner: British Telecommunications Public Limited Company · Inventors: Jessop, Paul David; Frost, Peter Lewis John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A customer lead in unit, (C) guides an optical fibre transmission line through an, aperture (7) in the wall (8a 8b) of a customer's premises. The unit (C) comprises a hollow wall plug (1) which is, frictionally engageable within the aperture (7), and a pair of, complementary bend control pieces (2), each having a bend, control surface (2a) formed with a curved bend control groove, (4) whose curvature conforms with minimum bend radius, requirements for the optical fibre transmission line. The bend, control pieces (2) are formed with engagement portions (3), which inter-engage with a complementary engagement, portion (1a) formed at one end of the wall plug (1) to grip the, wall plug between …
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 2, 1995 and granted November 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 2, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 2, 2017.
- 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.