Patent:DE540556
Patent: | DE 540556 |
Title: | Rechenvorrichtung |
Date: | 21.12.1931 |
Place: | |
Country: | Germany |
Person: | Walper, Maximilian (P) |
Company: | |
Internal Links: | |
Keywords: | |
Link to the patent office: (without guarantee) | ![]() |
- DATUM: 21.12.1931
- TITEL: Rechenvorrichtung
- PERSON: MAXIMILIAN WALPER