System for the remote measuring of the protection ground
CA 2188146 C · Owner: Scasciafratti, Gianfranco · Inventors: Scasciafratti, Gianfranco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a system for the remote measuring of the protection ground, comprising a centralized ground measuring device (1), a line selector (2) and remote controlled actuators (3) located near the region in which the measurement is required, said ground resistance measurement is performed in such a way that the measurement point is very distant from the reference grounds so that in this, way the deepest layers of the soil are involved in the measurement, which must be considered to be at a constant potential.
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, 1995 and granted August 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 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.