Camera having chamber for storing exposed film units during their development
CA 1281929 C · Owner: Polaroid Corporation · Inventors: Whiteside, George D.; Johnson, Bruce K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title: CAMERA HAVING CHAMBER FOR STORING EXPOSED FILM UNITS DURING THEIR DEVELOPMENT, ABSTRACT OF THE DISCLOSURE An instant type camera having structure for moving an exposed self-developing type film unit from an exposure position within a film cassette to a lighttight imbibition chamber located behind the film cassette in which chamber the film unit remains during the formation of a visible image. A wall of the lighttight imbibition chamber includes a film loading door having à window therein for viewing a film unit located in the imbibition chamber. The window is provided with a blind which is operative to maintain the lighttightness of the chamber until the formation of the visible …
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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
- Granted March 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2008.
- 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.