| Signature mark | NL 124/138 |
|---|---|
| Title | Patentunterlagen zu britischen Patentanmeldungen von Dirks |
| Contains | Patent Specification u. Korrespondenz des Patent Office, London, betr. Patent 786.048 "Improvements in or Relating to Electric Calculators", 1957 786.049 "Improvements in or Relating to Signal Storage Devices Digital Data", 1957-1958 786.050 "Improvements in or Relating to Electric Calculators",1957-1958 786.051 "Improvements in or Relating to Electric Calculators", 1957-1958 Beschreibung betr. Patentanmeldung 37 234/54 "Improvements in or Relating to Electric Calculators", o.D. |
| Duration | 1957 - 1958 |
| Scope | 1 M. ms. u. gedr. |
| Rights notice | CC BY-SA 4.0 |
