Venetian blind construction
CA 1082095 A · Owner: Bennett, Charles P. · Inventors: Rice, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The venetian blind consists of a plurality of slats which are flat black on one side and silvered on the other so that the blind can be light and heat reflective or heat absorbing but light transmitting between adjacent slats depending, upon the position of the slats. The venetian blind of the above type may be situated between two spaced and parallel glass windows thus functioning to collect heat, circulate warm air and, ventilate depending upon adjustment. The preferred embodiment incorporates venetian slats having a layer of insulation incorporated therein, so that when the venetian slats are closed a minimum of sunlight is transmitted and only a minimum of heat is transmitted through …
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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
- Granted July 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 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.