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Expired Canadian patentCanada

Apparatus and method for updating transaction file

CA 1306301 C · Owner: Casio Computer Co. Ltd. · Inventors: Kashio, Toshio

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

A table memory is provided for selecting types of files to be updated in accordance with identification codes designating types of transactions. When a transaction occurs, the corresponding transaction record and the identification code indicating the type of transaction are generated. Data from the table memory is retrieved in accordance with the identification code to select all the files to be updated. The selected files are sequentially updated in accordance with the transaction record.

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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 August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 26, 1989
GrantedAugust 11, 1992
Term endedAugust 11, 2009
Patent numberCA 1306301 C
Classification (IPC)G06Q40/00 +1 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedMay 26, 1989Patent grantedAug 11, 1992Term endedAug 11, 2009

Sources & verification

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