A camera capable of automatic film rewinding into the magazine, comprises an information recording device for recording at least information on use in an information recording portion formed at a predetermined position of the magazine loaded in the magazine chamber of the camera, an information detecting...http://www.google.es/patents/US5159365?utm_source=gb-gplus-sharePatente US5159365 - Camera with device for identifying used film magazine
Camera with device for identifying used film magazine