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Licence
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Ecological self-cleaning type landscape revetment reconstruction structure and construction method thereof
Free access| European Patent Office | 2022 -
Cleaning device capable of cleaning test tubes with different calibers
Free access| European Patent Office | 2021 -
Biocell centrifugal machine for preventing eruption of test tube plug
Free access| European Patent Office | 2021 -
Chinese chess provided with electronic device and having illuminating function
Free access| European Patent Office | 2015
