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Expired Canadian patentCanada

Self-aligning doctor/applicator blade assembly

CA 1195875 A · Owner: Corning Glass Works · Inventors: Lock, William E.; Paiement, Paul E. (Deceased); Clark, Edwin E.

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

The apparatus of the present invention includes a self aligning applicator/doctor blade assembly having at least two working surfaces adapted to engage an ink carrying conical roll wherein the working surfaces lie along the roll surface. A geometric apex for the cone and the working surfaces are coincident. An inking device circulates ink along a path including a zone adjacent to at least one working surface and the roll.

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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 29, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 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.
FiledDecember 2, 1982
GrantedOctober 29, 1985
Term endedOctober 29, 2002
Patent numberCA 1195875 A
Classification (IPC)B41F9/10 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedDec 2, 1982Patent grantedOct 29, 1985Term endedOct 29, 2002

Sources & verification

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