Film cartridge
CA 2177541 C · Owner: Yamaguchi, Takuji · Inventors: Yamaguchi, Takuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A film cartridge which permits efficient resetting of a film stored in a film container. A cover is mounted on a cartridge body so as to be movable between an open position and a closed position. In the closed position a film, storage space is defined by the cover and the cartridge body. Also, a film inlet/outlet slit is defined which communicates with the outside of the film storage space. Mounted in the film storage space are a spool and a guide plate for guiding a film inserted into the film storage space onto the outer periphery of the spool. The guide plate is pivotally supported. A roller is rotatably mounted on the end of the guide plate opposite the outer periphery of the spool. The …
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 May 28, 1996 and granted September 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2018.
- 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.