Patent:GB313157
Patent: | GB 313157 |
Title: | Improvements in or relating to calculating devices |
Date: | 15.10.1930 |
Place: | |
Country: | Great Britain |
Person: | |
Company: | Askania (P) Werke AG |
Internal Links: | Planimeter |
Keywords: | |
Link to the patent office: (without guarantee) | ![]() |
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