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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G03G9/10
characterised by carrier particles
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G03G9/107
having magnetic components
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G03G9/108
Ferrite carrier, e.g. magnetite
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G03G9/1085
with non-ferrous metal oxide, e.g. MgO-Fe2O3
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