Mining, tunnelling and construction survey device
CA 2389465 A1 · Owner: Hubley, James Gary · Inventors: Hubley, James Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mining or tunneling survey system and method are provided which uses a rod connected to a mine or, tunnel wail to establish by means of a light beam, a reference line ending with a dot on the face of the, mine or tunnel. A survey theodolite or total station is employed to calculate and record the obtained data, that can then be used for subsequent analysis for example, by means of an , AutoCAD program outside of, the mine. All operations can be performed by the same surveyor.
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 June 17, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 17, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2024.
- 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.