Apparatus for dispensing comestibles
CA 2007663 C · Owner: Kolada, Paul P. · Inventors: Grome, Donald C.; Teufel, Rainer B.; Kolada, Paul P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A battery-operated apparatus for dispensing comestibles has a housing to which a comestibles-receiving barrel is removably connected. A removable piston is nonrotatably slidable within the barrel and pushed through the barrel by a piston rod nonrotatably connected to the piston and slidably received within the housing. The piston rod has external screw threads over a substantial encircling drive nut. Drive means rotatably mounted in the housing and having a through-bore for slidably receiving the piston rod is provided for rotating the drive nut. The piston rod and the drive nut constitute a reversible assembly so that following use, the, barrel and the piston may be removed from the …
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 January 12, 1990 and granted May 17, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 12, 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.