Patent:GB143964
Brevet: | GB 143964 |
Titre: | Improvements in and relating to calculating devices of the slide rule type |
Date: | 01.06.1920 |
Lieu: | |
Pays: | Royaume-Uni |
Personne: | Oswald, George Winzar (P) |
Entreprise: | |
Liens internes: | Rechenschieber, Rechenrost |
Mots-Clefs: | |
Lien à la bureau des brevets: (sans garantie) | ![]() |
- DATUM: 01.06.1920
- TITEL: Improvements in and relating to calculating devices of the slide rule type
- PERSON: OSWALD GEORGE WINZAR