Liquid treatment of small articles
CA 1073326 A · Owner: Inco Limited · Inventors: Mackinnon, Robert I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for continuously conducting processes of cleaning, pickling or other fluid treatment of small articles such as metal turnings, cuttings, tags bolts or coin blanks, has rotating inclined drum carrying internal scroll with interruptions for providing countercurrent flows of treatment fluid flowing downward and articles moving upward; special embodiments provide for multiple stage treatments passing through plurality of coaxially rotating drums.
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 11, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 1997.
- 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.