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Patent:CA319817
| Patent: | CA 319817 |
| Title: | Writing adding machine |
| Date: | 16.02.1932 |
| Place: | |
| Country: | Canada |
| Person: | Foothorap, Harry Arthur (P) |
| Company: | Elliott-Fisher (P) Comp. |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  CA319817 |
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