Pivoted loudspeaker enclosure with visual indicator
CA 1083971 A · Owner: Kef Electronics Limited · Inventors: Fincham, Lawrence R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A loudspeaker for use in a hi fidelity stereo system comprises an enclosure provided with a bass drive unit. A further enclosure provided with mid-range and high frequency drive units is pivotally mounted on the first enclosure and is provided with an aperture and light source arrangement which will only be seen when the listener is in the correct position.
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 August 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 1997.
- 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.