Scanner system with input capability
CA 2057894 A1 · Owner: Swanberg, Melvin E. · Inventors: Swanberg, Melvin E.; S & R Tech Development; Brueggemann, Harry P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2057894 9115794 PCTABScor01, A scanner system (10) includes a light source (11) for producing a light beam (12), scanning components (13) for directing the light beam to a spot (14) at a predetermined location relative to the scanning components (13) and for moving the spot (14) along a scan line (15) of specified length at the predetermined location and a detector arrangement (30) responsive to light reflected from a surface (21) placed at the predetermined location for producing a signal related to a visually discernible pattern on the surface (21). The detector arrangement (30) is exposed to the full length of the scan line (15), preferably being configured to be responsive to light …
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 April 8, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2013.
- 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.