Patent:GB107228
Patent: | GB 107228 |
Titel: | Improvements in and connected with Slide Rules and like Calculating Instruments |
Datum: | 18.06.1917 |
Ort: | |
Land: | Großbritannien |
Person: | Berson, Theodore (P) |
Firma: | Holophane Ltd |
Links im Rechnerlexikon: | Rechenschieber |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | GB107228 |
- DATUM: 18.06.1917
- TITEL: Improvements in and connected with Slide Rules and like Calculating Instruments.
- PERSON: HOLOPHANE LTD GB