Patent:GB136090
Patent: | GB 136090 |
Title: | Improvements in Slide Rules. |
Date: | 11.12.1919 |
Place: | |
Country: | Great Britain |
Person: | Smith Edward William |
Company: | |
Internal Links: | |
Keywords: | |
Link to the patent office: (without guarantee) | ![]() |
- DATUM: 11.12.1919
- TITEL: Improvements in Slide Rules.
- PERSON: SMITH EDWARD WILLIAM GB