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| Subject | English | Russian |
| patents. | delimiting from prior art | отграничение от состояния техники |
| patents. | delimiting from prior art | отграничение от уровня техники |
| patents. | from prior art | из предшествующего уровня техники (different situation exists where the solution is obvious from prior art which contains the same solution for a similar problem. Alexander Demidov) |