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Patent:FR668368
| Patent: | FR 668368 |
| Title: | Machine à calculer électrique |
| Date: | 09.07.1929 |
| Place: | |
| Country: | France |
| Person: | Boutet, René Edmond |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  FR668368 |
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