Expired Canadian patentCanada
Composite overhead transmission line
CA 1194714 A · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Saito, Yasunori
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite overhead transmission line includes a spacer formed with spiral grooves filled with a jellylike material into which optical fibers are buried. cover or sheath surrounds the spacer member to protect the internal components.
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 October 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 30, 1982
GrantedOctober 8, 1985
Term endedOctober 8, 2002
Patent numberCA 1194714 A
Classification (IPC)G02B6/00 +2 more
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.