Patent:US2381424
Patent: | US 2381424 |
Title: | Calculating Device |
Date: | 07.08.1945 |
Place: | |
Country: | USA |
Person: | Danielson Raymond W |
Company: | |
Internal Links: | |
Keywords: | |
Link to the patent office: (without guarantee) | US2381424 (espacenet), US2381424 (uspto) |
- DATUM: 07.08.1945
- TITEL: Calculating device