Natural lighting apparatus
CA 1301729 C · Owner: Hane, Tadashi · Inventors: Hane, Tadashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A natural lighting apparatus including: a mirror having a mirror face for reflecting light; a supporting mechanism for supporting the mirror to be rotatable about both a first axis and a second axis perpendicular to the first axis; a first sensing mechanism for sensing a first direction of the light source about the first axis for generating a first signal representative of the first light source direction about the first axis; a second sensing mechanism for sensing a second direction of the light source about the second axis for generating a second signal representative of the second light source direction about the second axis; an attitude control mechanism for …
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
- Granted May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 2009.
- 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.