Patent:US1244397
Patent: | US 1244397 |
Title: | Computing attachment for type-writers |
Date: | 23.10.1917 |
Place: | San Francisco |
Country: | USA |
Person: | Wright, Walter (P) |
Company: | Underwood (P) Computing Machine Comp. |
Internal Links: | |
Keywords: | |
Link to the patent office: (without guarantee) | ![]() ![]() |
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