Alignment systems
CA 2176250 A1 · Owner: Squibb, Frank Norman · Inventors: Squibb, Frank Norman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus is provided for aligning two objects (1 2), such as a board and screen in a screen printer each having at least one, reference mark (6a. 7a) on a surface thereof whereby alignment of the objects is indicated by alignment of corresponding reference marks on the surfaces of the objects. The apparatus comprises support means for supporting the objects in use with the said surfaces facing one another, and imaging means (20), mounted for movement between the said surfaces in use for acquiring, on a single imaging surface thereof, simultaneous images of respective areas of the surfaces of the objects which areas contain corresponding reference marks. The apparatus includes control means …
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 16, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2016.
- 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.