• All sections
• G - Physics
• G09C - Ciphering or deciphering apparatus for cryptographic or other purposes involving the need for secrecy
• G09C 3/10 - Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member involving removable or interchangeable coding members, e.g. master tapes, punched cards

Patent holdings for IPC class G09C 3/10

Total number of patents in this class: 2

10-year publication summary

Principal owners for this class