Corrugating machines
CA 1292666 C · Owner: Thompson, Frederick H. · Inventors: Thompson, Frederick H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an apparatus for making corrugated board including a single-facer unit for making single-face board and a double-facer unit adaptable to receive the output of the single-facer unit for making double-face board therefrom the, improvements comprising in the single-facer unit an adhesive roller having a cylindrical outer surface with spaced rows of depressions formed therein, mechanisms for engaging a liner member with the applicator roller over a predetermined arcuate area of the surface thereof for transferring adhesive dots corresponding to the shape and spacing of the rows of depressions to one surface of the liner member a container, positioned adjacent to the applicator roller in …
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 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 2008.
- 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.