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Expired Canadian patentCanada

Process of and apparatus for etching metal plates

CA 63751 A · Owner: Levy, Louis Edward · Inventors: Levy, Louis Edward

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

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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.

Google PatentsCIPO record

Why it's free to use

  • Granted September 1, 1899. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 1916.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 1, 1899
GrantedSeptember 1, 1899
Term endedSeptember 1, 1916
Patent numberCA 63751 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

190019021904190619081910191219141916Application filedFeb 1, 1899Patent grantedSep 1, 1899Term endedSep 1, 1916

Sources & verification

Official CIPO records

Canadian Patents DatabaseClaims, description, documents and status.CIPO

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Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.com

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