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Expired Canadian patentCanada

Table-drive apparatus for data display and modification

CA 1186061 A · Owner: Data General Corporation · Inventors: Dale, Paul B.; Ray, Roger C.; Banks, Edwin R.

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

Data modification and display apparatus for use in a digital computer system together with a method employing data modification and display apparatus for modifying and displaying data. Data modification and display apparatus has memory containing a buffer for storing data codes representing data to be modified, control data including a state value for controlling modification and display of data an editing, table containing editing instruction sequences for modifying the contents of the buffer, modifying the control data and, producing display codes, a terminal with a keyboard for providing input codes and a screen for displaying visual representations in response to display codes and a, …

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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 April 23, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 28, 1983
GrantedApril 23, 1985
Term endedApril 23, 2002
Patent numberCA 1186061 A
Classification (IPC)G06F3/15 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedFeb 28, 1983Patent grantedApril 23, 1985Term endedApril 23, 2002

Sources & verification

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