Spyhole viewer
CA 2081845 A1 · Owner: Goldstein, Pinchas · Inventors: Goldstein, Pinchas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spyhole viewer for a door or wall, having an objective system for producing a real, inverted image and mounted in tubular member fixedly installable in the door or wall at least, one reflector for angularly deflecting the light beams from the objective system, an erector for inverting the inverted image and located behind at least one of the elements of the objective system, an image surface upon which the real image will appear a housing fixedly attachable to the tubular member and accommodating at least the reflector and a projection lens mounted therein in coaxiality with the optical axis as deflected by the reflector. The optical axis is angularly deflected at least once on its way …
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 October 30, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2014.
- 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.