Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
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B41J
TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
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2/00
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
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B41J2/385
characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
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B41J2/41
for electrostatic printing
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B41J2/415
by passing charged particles through a hole or a slit
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