Method of and apparatus for displaying alphanumeric range in camera viewfinder
CA 1261460 A · Owner: Polaroid Corporation · Inventors: Neely, Judith L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A photographic apparatus in which signals representative of exposure parameters, such as distance or scene brightness are, converted to alphanumeric representations of such parameters and rendered visible to the user of the apparatus. In a preferred embodiment light emitting diodes are used for the alphanumerically rendered signals.
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
- Granted September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
- 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.