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| patent withheld from reduction to practice in the hope of future use (dans l’espoir de l’exploiter plus tard) | |||
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brevet encore non exploite : 2 phrases, 1 sujets |
| Brevets | 2 |
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| patent withheld from reduction to practice in the hope of future use (dans l’espoir de l’exploiter plus tard) | |||
|
brevet encore non exploite : 2 phrases, 1 sujets |
| Brevets | 2 |