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Expired Canadian patentCanada

Bar code indexing apparatus for a video disc system

CA 1202417 A · Owner: Fields, Craig I. · Inventors: Fields, Craig I.

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

The present invention is an indexing apparatus for use in combination with a printed index which has a set of associated bar codes each of which corresponds to a unique set of items in the printed index. The indexing apparatus is electrically coupled to an information storage and retrieval system. The indexing apparatus includes a bar code reading device for reading each of the set of associated bar codes of the printed index. The indexing apparatus also includes an accessing device, electrically coupled to the bar code reading device, for accessing the unique set of items within the storage and retrieval system which corrseponds to a particular associated bar code. The storage and …

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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, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 21, 1983
GrantedMarch 25, 1986
Term endedMarch 25, 2003
Patent numberCA 1202417 A
Classification (IPC)G06K7/10 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJan 21, 1983Patent grantedMarch 25, 1986Term endedMarch 25, 2003

Sources & verification

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