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Expired Canadian patentCanada

Predefined character sequence generator

CA 1253974 A · Owner: Rose, David K. · Inventors: Rose, David K.

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

An apparatus for facilitating entry of pre-defined data into a computer system or computer-controlled system and comprising means for entering and storing pre-defined sequences of data within a memory storage device, each such sequence being identified by a simple one-to-five character alphanumeric code name, means for accepting each such alphanumeric code name and for reading each such corresponding pre-defined data sequence at its location in the memory storage device and means for, connecting the output to a computer system and for transmitting each such pre-defined data sequence to the computer system in response to the selected alphanumeric code name as if each such data sequence had …

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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 9, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 9, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 19, 1986
GrantedMay 9, 1989
Term endedMay 9, 2006
Patent numberCA 1253974 A
Classification (IPC)G06F7/00 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedMarch 19, 1986Patent grantedMay 9, 1989Term endedMay 9, 2006

Sources & verification

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