(under subclass 517) Subject matter wherein the support means are for the purpose of supplying plates or light-sensitive material to and removing the same from "principal" plateholders in daylight and either do not themselves hold the plate or light-sensitive material during exposure or have independent front closures and are otherwise light-excluding.
(1) Note. When these auxiliary holders contain more than one plate and are capable of successively supplying these plates to exposure positions, the holders become magazines and are classified in this class, subclasses 360+, if claimed alone or with a detailed camera, unless the device is a mere double plateholder.
