Metered spray device
CA 1050501 A · Owner: Smith Kline And French Canada Ltd. · Inventors: Brown, Frank E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A metered spray device has a container with an open top. A barrel is sealed in the top of the container and extends into the container, An elongated piston is slidably mounted in the barrel. The piston has a central opening running the full length of the piston for the passage of fluid. A check valve in the lower end of the barrel blocks the flow of fluid from the barrel into the container. A nozzle for engagement with a nostril is connected to the upper end of the piston. A spring biased check valve in the upper end of the piston blocks the flow of fluid downwardly into the piston.
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 March 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 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.
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.