Patent:GB1311688
Patent: | GB 1311688 |
Title: | IMPROVEMENTS IN AND RELATING TO CALCULATING MACHINES |
Date: | 29.07.1870 |
Place: | San Gabriel, Cal. USA |
Country: | Great Britain |
Person: | Mark, Richard S. (P) |
Company: | Addmaster (P) Corporation |
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Keywords: | |
Link to the patent office: (without guarantee) | ![]() |
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