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Publication of BE675846ApublicationCriticalpatent/BE675846A/xx
G03G15/00—Apparatus for electrographic processes using a charge pattern
G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
