CPC Subgroup
G03G 15/056 using internal polarisation
Full Title
Apparatus for electrographic processes using a charge pattern (G03G16/00, G03G17/00 take precedence) > using internal polarisation
G03G 15/056 Apparatus for electrographic processes using a charge pattern (G03G16/00, G03G17/00 take precedence) > using internal polarisation