Patent:CH36182
Patent: | CH 36182 |
Title: | Rechenlehrmittel |
Date: | 15.12.1906 |
Place: | Deutschland |
Country: | Switzerland |
Person: | Rudolf, Wilhelm (P) |
Company: | |
Internal Links: | Lehrmittel |
Keywords: | |
Link to the patent office: (without guarantee) | ![]() |
- DATUM: 15.12.1906
- TITEL: Rechenlehrmittel
- PERSON: RUDOLF WILHELM DE