Apparatus for document annotation and manipulation using images from a window source
CA 2003231 C · Owner: Wang Laboratories, Inc. · Inventors: Burns, Raymond S.; Levine, Stephen R.; Lakness, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data processing system provides annotation of a document through an electronic tablet, a keyboard and an audio assembly. An annotatable document is generated from a window of a multiwindow support program running independently of the annotation program in the data processing system. For each window of the multiwindow program a working document is, generated and is annotatable by the annotation program and apparatus. An annotatable document is also generated from the whole screen view of overlapping windows produced during execution of the multiwindow support program. Annotated working documents may be subsequently stored in and thereafter retrieved from the database of the multiwindow …
Read the whole patent
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
- Filed November 17, 1989 and granted February 6, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 17, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 2011.
- 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.