Communications cable
CA 1248189 A · Owner: Pirelli General Plc · Inventors: Cowley, Michael J.; Osterfield, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A communications cable comprises a plurality of coaxial elements (1) which are stranded around a central structure (2). The central structure (2) is resiliently deformable to allow limited displacement of the coaxial elements (1) when the cable is subjected to bending during installation. The central structure may comprise simply a tube of plastics or rubber material or, a plurality of tubes laid-up together.
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
- Granted January 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2006.
- 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.