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Expired Canadian patentCanada

Periodical information storage and retrieval system

CA 1237154 A · Owner: Suska, Charles R. · Inventors: Suska, Charles R.

CIPO record

Overview

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

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Abstract From the Canadian patent

Periodical Information Storage and Retrieval System An information storage and retrieval system includes a periodical constructed to facilitate storage and retrieval of information found therein. The periodical includes a plurality of titled articles and the like and two index pages identifying the articles. One of the index pages is adapted to be removed from the periodical for separate storage and use in a suitable filing device to facilitate retrieval of information from a series of the periodicals.

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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 May 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 27, 1985
GrantedMay 24, 1988
Term endedMay 24, 2005
Patent numberCA 1237154 A
Classification (IPC)B42D1/00 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedAug 27, 1985Patent grantedMay 24, 1988Term endedMay 24, 2005

Sources & verification

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