Patent:CH297469
Patent: | CH 297469 |
Title: | Machine à additionner |
Date: | 31.03.1954 |
Place: | Schweiz |
Country: | Switzerland |
Person: | |
Company: | |
Internal Links: | Zahlenschieber |
Keywords: | |
Link to the patent office: (without guarantee) | ![]() |
Zahlenschieber in Stiftform
- DATUM: 31.03.1954
- TITEL: Machine à additionner.
- PERSON: ARVA S A CH