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Subject
- 23 PATENT
- 14 ПАТЕНТ
- 13 INVENTION
- 13 ИЗОБРЕТЕНИЕ
- 9 USEFUL MODEL
- 6 ВОЛОЧЕНИЕ
- 5 DRAWING
- 4 EXTRUSION
- 3 ANNEALING
- 3 BRIQUETTING
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Date issued
- 3 2020 - 2021
- 17 2010 - 2019
- 14 2000 - 2009
- 10 1993 - 1999