Expired Canadian patentCanada
Solar collector comprising an entrance window consisting of evacuated tubes
CA 1065715 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Horster, Horst; Klinkenberg, Klaus; Kersten, Reinhard
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solar collector comprising an entrance window of evacuated tubes which contact the heat exchanger at least over the major part of their surfaces facing the heat exchanger.
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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 November 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedNovember 6, 1979
Term endedNovember 6, 1996
Patent numberCA 1065715 A
Classification (IPC)F24J2/50 +2 more
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.