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Expired Canadian patentCanada

Device for drying the surface of a blanket cylinder of ink washing solvent

CA 1064768 A · Owner: Addressograph-Multigraph Corporation · Inventors: Sable, Harvey J.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A device for removing the solvent wash liquid that is applied to a lithographic blanket for the purpose of removing the residual ink image constructed of a pair of flat plates separated from one another, by a narrow height in range of 0.005 inches to 0.06 inches and, which provides a capillary channel between the two plates for collecting liquid. The front edge of the lower plate is formed into a wiping edge which makes contact with the full width of the blanket and acts as a wiper blade for accumulating liquid at the entryway of the channel. Any liquid prevented to the capillary channel immediately fills the channel and excess liquid flows out the back end of channel by force of gravity …

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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 October 23, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 23, 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.
Filed—
GrantedOctober 23, 1979
Term endedOctober 23, 1996
Patent numberCA 1064768 A
Classification (IPC)B41L41/00 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedOct 23, 1979Term endedOct 23, 1996

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.