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Expired Canadian patentCanada

Matrix printer comprising parallel printing pins

CA 1057575 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Kunath, Helfrid

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 matrix printer comprising a number of mutually parallel, straight printing pins which are guided within at least two mating, semi-cylindrical rods whose outer surface serves for guiding armatures which are connected to the printing pins. Components which are subject to wear such, as the printing pins and the armatures can be simply, replaced in that the rods are extractably arranged in the housing of the printer.

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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 July 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 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—
GrantedJuly 3, 1979
Term endedJuly 3, 1996
Patent numberCA 1057575 A
Classification (IPC)B41J1/08 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJuly 3, 1979Term endedJuly 3, 1996

Sources & verification

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