Patent:GB707740
| Patent: | GB 707740 | 
| Titel: | Improvements in or relating to circular Slide Rules for making calculations relating to speed, time, and distance | 
| Datum: | 21.04.1954 | 
| Ort: | Liverpool | 
| Land: | Großbritannien | 
| Person: | Harold Alexandre Babington | 
| Firma: | |
| Links im Rechnerlexikon: | Rechenscheibe | 
| Schlagworte: | |
| Link zum Patentamt: (ohne Garantie)  |   GB707740  | 
- DATUM: 21.04.1954
 - TITEL: Improvements in or relating to circular slide rules for making calculations relating to speed, time, and distance
 - PERSON: HAROLD ALEXANDRE BABINGTON BLA
 
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 GB707740