Double sided scanner
CA 2312340 A1 · Owner: Holden, Douglas A. · Inventors: Whitten, David B.; Holden, Douglas A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for double-sided scanning of a paper document comprising diagonally offset scanner and traction pinch roller pairs thereby forming a zero-gravity traction feed. The zero-gravity traction feed allows the, scanning apparatus to be oriented in varying positions while maintaining full operation. The scanner is adapted to scan a two-sided document by flipflopping between two scanners whose field of views each face opposing sides of the document.
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 June 27, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2022.
- 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.