Patent:DE372432
Patent: | DE 372432 |
Title: | Kreisförmiger Rechenschieber |
Date: | 27.03.1923 |
Place: | |
Country: | Germany |
Person: | Trentmann, Hans (P) |
Company: | |
Internal Links: | Rechenscheibe |
Keywords: | |
Link to the patent office: (without guarantee) | DE372432 |
- DATUM: 27.03.1923
- TITEL: Kreisfoermiger Rechenschieber
- PERSON: HANS TRENTMANN