Canadian application, no grantCanada
Non-metallic conduit which is locatable when buried underground and a method of manufacture of same
CA 2094059 A1 · Owner: Ransom, Robert Russell · Inventors: Ransom, Robert Russell
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 method of making a non-metallic conduit which is locatable when buried underground. The method includes the step of incorporating a longitudinally extending wire into a sidewall of a non-metallic conduit.
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 15, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 15, 1993
GrantedNo grant recorded
Term endedApril 15, 2013
Patent numberCA 2094059 A1
Classification (IPC)F16L55/00 +1 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.