Preloaded single-use instant camera
CA 2244890 A1 · Owner: Polaroid Corporation · Inventors: Douglas, Lawrence M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An instant camera for exposing self-processing photographic film sheets (200) provided in a loose stack within the camera. The camera includes a mechanism for manually extracting each film sheet after exposure. The film extracting mechanism comprises a pair of opposed pressure rollers (310 320), one of , which has a gear pinion (130) meshing with the teeth (152) of a manually operable gear rack (110), and a pick or film gripper (144) provided at one end of the rack. Upon pulling out the rack from the camera body the pick engages , the trailing end of the uppermost film sheet such that the film leading end is moved into the nip between the opposed pressure rollers which crush a bag, …
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 March 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2019.
- 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.