Light fitting including filter elements
CA 2047701 A1 · Owner: Krantz, Anders · Inventors: Krantz, Anders
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A light fitting in the form of a casing (1) which comprises a frame portion (2) defining an opening to a cavity (4) in the casing and which has one or more sockets (12) adapted to receive exchangeable light-producing members (13), especially fluorescent tubes inside the cavi-, ty. One or more connectors are provided inside the casing (1) for connecting at least one exchangeable air filter tube (15) which can be arranged in the cavity and which has at least one air-permeable wall for cleaning the air conducted therethrough. Fig. 1 elected for publication
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 March 1, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 1, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2012.
- 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.