B41J 2/31
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using a print element with projections on its surface impacted or impressed by hammers
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Edits on 16 Mar, 2022
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Edits on 9 Mar, 2022
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B41J 2/31
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using a print element with projections on its surface impacted or impressed by hammers
Infobox
Classification Type
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