System of "computer aided surveying" for obtaining digital, 3d topographic information
CA 2013871 C · Owner: Geeris Holding Nederland B.V. · Inventors: Poelstra, Theo Jogchum
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method, at the disposal of surveying, for the compilation of digital files of detailed, three-dimensional topographic, data, consisting of co-ordinates of points in the terrain and the corresponding topographic point codes line codes and, plane codes; from at least three successive station positions either photographically, or electronically panoramic recordings are made from the surroundings of each station position. Each recordings contains the entire horizon from the zenith, to far under the horizon so that a sequence of recordings are, obtained. In a next step compared to the local horizon-plane, the spatial directions are determined of each points in the terrain to-be-defined using …
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 4, 1990 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2012.
- 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.