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Expired Canadian patentCanada

Metal marking using plurality of side-by-side arranged group of stencils

CA 1074101 A · Owner: Hilti Aktiengesellschaft · Inventors: Mcneil, Thomas; Lawrie, Alexander M.; Woodhouse, Eric D.

CIPO record

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

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Abstract From the Canadian patent

Apparatus for marking a surface of a piece of metal comprising a molten other metal spray gun assembly and a stencil assembly comprising a plurality of side by side arranged groups of stencils each being indexable to bring a selected one thereof to an operative position one of the, assemblies being movable transversely of the direction of indexing to enable marking to be effected by metal from the spray gun passing through those stencils which are in the operative position onto the surface whilst there is no relative movement between the stencil assembly and the surface. The invention also provides a method of marking a surface of a piece of metal wherein a stencil assembly comprising a …

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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 March 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 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.
Filed—
GrantedMarch 25, 1980
Term endedMarch 25, 1997
Patent numberCA 1074101 A
Classification (IPC)C23C4/01 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMarch 25, 1980Term endedMarch 25, 1997

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