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Expired Canadian patentCanada

Scrolling tool for text and graphics in a display system

CA 1315893 C · Owner: Wymore, Farrell W. · Inventors: Gest, Stephen B.; Wymore, Farrell W.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A tool for a display system comprises means for superimposing a box on a portion of a buffer of data visible on a display, said box being representative of the size and location of said visible portion with respect to the whole of said buffer. For example a, box of an appropriate size can be superimposed on a portion of a buffer of data displayed in a window at an appropriate location in the window to allow the two-dimensional extent of the visible portion of the buffer with respect to the rest of the buffer of data to be represented in an easily understood manner. The invention finds particular application as part of a scroll tool. By the provision of means for interacting with the scroll …

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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 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2010.
  • 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 3, 1989
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315893 C
Classification (IPC)G06F3/03 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMay 3, 1989Patent grantedApril 6, 1993Term endedApril 6, 2010

Sources & verification

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