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0497535 |
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0541072 |
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2005.01.21 |
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| Sewer pipe fitting |
0519107 |
2005.01.21 |
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| Blocks for protection of river embankments with circular vegetation blocks |
0519108 |
2005.01.21 |
Patent |
| Ecological block for riverbed ecosystem protection |
0519104 |
2005.01.21 |
Patent |
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