Qingdao Metro Line 1 Co., Ltd
China
| Total IP | 3 |
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| Total IP Rank # | 507,980 |
| IP Activity Score | 0.9/5.0 2 |
| IP Activity Rank # | 473,121 |
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| Last Patent | 2022 - Grouting apparatus for highly co... | |||||||||||||||
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| First Patent | 2020 - Self-drilling type tubular colum... | |||||||||||||||
Latest Inventions, Goods, Services
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