Dispenser with expansible bladder with vapor phase component
CA 1049978 A · Owner: Plant Industries · Inventors: Venus, Frank (Jr.)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a dispenser of the expansible membrane or bladder type wherein fluid to be dispensed is contained therein, the improvement which comprises a valve body member utilized in the dispenser construction of sufficient length so as to be submerged within the contained fluid at all times and wherein an amount of vapor or gas is included within the expansible bladder or membrane so as to permit ready mixing of the stored fluid.
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 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 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.
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.