Device for checking or calibrating the angle-dependent alignment of a high-precision test piece
CA 2534041 C · Owner: Leica Geosystems Ag · Inventors: Lippuner, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device for checking or calibrating the angledependent alignment of a reference structure on a high-precision test-piece (1). The device comprises a plinth (2) a retainer piece (3), mounted such as to rotate about a retainer piece axis (4) for retaining the test-piece (1) , and a measuring piece (5) with a measuring piece bearing unit (6) for the , rotational mounting of the measuring piece (5) about a measuring piece axis , (7). An optical unit (8) is mounted on the measuring piece (5) for receiving , at least one test-piece beam (10 10a, 10b, 10c, 10d), interacting with the reference structure on the test piece (1) running essentially in a measuring , plane …
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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 July 23, 2004 and granted March 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 23, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2026.
- 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.