Toilet dispensing device
CA 1198553 A · Owner: Dolan, John E. · Inventors: Dolan, John E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automatic toilet dispensing device for automatically discharging a measured amount of bleach (or detergent or both), from a container which has an unobstructed opening in its top surface through which tank water can enter and form a reservoir of bleach solution; a venting means is located above the container's top surface for venting air responsive to the intake of tank water through the opening, and for defining the measured amount; the venting means preferably being in the form of a bent tube having a relatively large diameter section adjacent the container's top surface and a distal section of smaller diameter; in operation the liquid solution in the reservoir above the block of …
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 December 31, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 2002.
- 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.