Universal sun-clock
CA 2079411 A1 · Owner: Navir Snc Di Natali A. & C. · Inventors: Natali, Angelo; Natali, Franco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A universal sun-clock is described comprising a base on whose, surface there are present a sun-dial (consisting of a clock-face and of the respective time-pointing tongue) and a reference mark for orienting the sun-clock according to the longitude and an upright (hinged to an end of a support which can be drawn out from the base) bearing a semicircular sector, free to rotate around a pin on which, sector a latitude scale (graduated from 90° of latitude North to 90° of latitude South) is marked : an index integral with the upright allows to read the latitude on the semicircular sector. When the sunclock is in a working position the support is drawn out from the base and the upright is let …
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 September 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2014.
- 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.