Patent:GB107228
Brevet: | GB 107228 |
Titre: | Improvements in and connected with Slide Rules and like Calculating Instruments |
Date: | 18.06.1917 |
Lieu: | |
Pays: | Royaume-Uni |
Personne: | Berson, Theodore (P) |
Entreprise: | Holophane Ltd |
Liens internes: | Rechenschieber |
Mots-Clefs: | |
Lien à la bureau des brevets: (sans garantie) | GB107228 |
- DATUM: 18.06.1917
- TITEL: Improvements in and connected with Slide Rules and like Calculating Instruments.
- PERSON: HOLOPHANE LTD GB