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Note 11 - Deferred Revenues - Summary of Deferred Revenues (Details) - EUR (€) € in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Deferred revenues, total | € 3,205 | € 2,902 |
Less long term portion | (1,313) | (973) |
Deferred revenues, current portion | 1,892 | 1,929 |
Maintenance [Member] |  |  |
Deferred revenues, total | 1,741 | 1,246 |
RPP [Member] |  |  |
Deferred revenues, total | 243 | 339 |
Sale of Devices [Member] |  |  |
Deferred revenues, total | 115 | 289 |
Extension of Warranty [Member] |  |  |
Deferred revenues, total | 837 | 855 | € 676
Research and Development Grants [Member] |  |  |
Deferred revenues, total | € 269 | € 173 |

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