Bar code processing apparatus
CA 1233253 A · Owner: Ncr Canada Ltd. - Ncr Canada Ltee · Inventors: Mazumder, Ali T.; Dumas, Armand M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A plurality of vertically aligned sensing members scan a matrix type bar code on a document. During the scanning of the bar code the time period, between the detection of succeeding bars is determined. An average time period which occurs during the detection of a number of bars is then generated. Each succeeding time period generated as a result of detecting the next bar is divided by the average time period to determine the presence or absence of the bar in addition to the number of spaces preceding the detected bar. This information is used in decoding the bar code label.
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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 February 23, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 23, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.