Patent:US2578705
Patent: | US 2578705 |
Title: | Calculating Machine |
Date: | 18.12.1951 |
Place: | |
Country: | USA |
Person: | Johnson Sheldon |
Company: | |
Internal Links: | |
Keywords: | |
Link to the patent office: (without guarantee) | ![]() ![]() |
- DATUM: 18.12.1951
- TITEL: Calculating machine