Patent:US2707077
Patent: | US 2707077 |
Title: | Ten-Key Indexing System |
Date: | 26.04.1955 |
Place: | |
Country: | USA |
Person: | Wise, E. L. (P) |
Company: | Underwood (P) |
Internal Links: | |
Keywords: | |
Link to the patent office: (without guarantee) | ![]() ![]() |
- DATUM: 26.04.1955
- TITEL: Ten key indexing mechanism
- PERSON: UNDERWOOD CORP