Patent classifications
G
PHYSICS
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G03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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G03G
ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
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2215/00
Apparatus for electrophotographic processes
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G03G2215/00016
Special arrangement of entire apparatus
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G03G2215/00021
Plural substantially independent image forming units in cooperation, e.g. for duplex, colour or high-speed simplex
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