• All sections
• B - Performing operations; transporting
• B41J - Typewriters; selective printing mechanisms, i.e. mechanisms printing otherwise than from a forme; correction of typographical errors
• 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

Patent holdings for IPC class B41J 2/31

Total number of patents in this class: 2

10-year publication summary

Principal owners for this class